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How to Eliminate Abandoned Calls from your Call Center



Heading image of hung up phone

Abandoned calls are the silent sound of customers walking away.

It's a sign of frustrated callers, communication gaps, or poor call flows—and a symptom of a bigger problem: revenue loss.


The Impact of Abandoned Calls by the Numbers

American Express discovered the hard way just how costly abandoned calls can be. Their internal survey revealed that each abandoned call represented approximately $50 in lost potential. When they crunched the numbers, this translated to a staggering $4,000 per day in revenue loss. Extrapolated annually, that's over $1,000,000 evaporating into thin air—enough to make even the most stoic CFO break into a cold sweat.


Defining Abandoned Calls

An abandoned call occurs when a caller terminates the connection before speaking with a representative. It's the digital equivalent of walking out of a store in frustration—except this walkout happens before you've even made eye contact with a sales associate.

abandoned call formula for KPI calculation

The call abandonment rate is calculated using the following formula:

Abandonment Rate (%) = (Number of Abandoned Calls ÷ Total Number of Calls) × 100

This metric is the most requested Key Performance Indicator (KPI) in call centers. A low abandonment rate is like a gold star for your customer service—it suggests optimized call flows, adequate staffing, and most importantly, strong customer satisfaction levels.


What Abandoned Calls Really Mean:

Every abandoned call is a missed opportunity, and while there are many potential causes for callers to hang up prior to connecting, here are the most common:

  • Extended Wait Times: Customers today have the patience of a caffeinated squirrel, and putting them on hold is a guaranteed way to have them hang up on you. Modern customers want instant connection—preferably with a real human, not a robot.

  • Complex IVR Systems: Nobody wants to navigate a phone menu that feels like solving a Rubik's Cube blindfolded. If customers can't quickly reach a human or hit zero, you're asking them to bail.

  • Technical Issues: Dropped calls, poor connectivity, and routing problems are the silent killers of customer communication.

chart showing callers willingness to wait before abandoning calls

The Ripple Effect of Abandoned Calls

Each time a caller tries to connect with your organization and can't, that erodes their confidence in you. These failed interactions are like death by a thousand cuts—slowly but surely chipping away at your brand's reputation and customer loyalty.

Remember the golden days of Amazon's customer service? Back when Jeff Bezos launched the company with a mission to be 'customer obsessed'—and actually meant it? Amazon built an empire on the radical concept of doing exactly what they promised during a time when reliable package delivery was more of a wish than a reality. Customers like me didn't just buy products; we bought peace of mind.

Today, Amazon relies on automated support systems, and human customer service representatives are an endangered species. Do I still order from them? Of course—old habits die hard. But my brand loyalty? That shipped out long ago, packed in a cardboard box with no return label. I'm now just as likely to order from a competitor with a better price.


Eliminting Abandoned Calls Once and For All

The takeaway is brutally simple: You're only as good as your last interaction. And if that interaction ends with a dial tone, you're not just losing a sale—you're writing your brand's eulogy.

The first step to eliminating these pesky call drops is by implementing end-to-end visibility across communication channels. Platforms like Expo XT UC Analytics let organizations track customer interactions comprehensively—from initial IVR entry through multiple touchpoints like hunt groups, agents, and extensions, and across diverse unified communications technologies.

By leading change through data-driven decisions, businesses can transform call abandonment from a persistent challenge to dynamically improve staffing models, understand precise call termination reasons, identify process bottlenecks, and continuously enhance self-service options.

Keep measuring, keep improving, and watch your customer experience transform from good to "wow, they totally get me.

screenshot of Expo XT abandoned calls report