By Nicolas Avila · October 9, 2026

Where customers get stuck: finding the bottleneck with what you already have

Photo: Avila Ops Tecnologia

The bottleneck is the stage where most customers disappear between first contact and payment. To find it, take your last 30 WhatsApp conversations, record which stage each stopped at, and count. The stage with the most stops is the bottleneck. It takes an afternoon, requires no system, and usually surprises you: it is almost never where the owner imagined.

A slower week, such as Carnival week, is good for this task. Use conversations started at least two weeks ago, which have had time to close or die. What you find now improves the following month. If you have not calculated how many conversations become a sale, start there: How many messages until a sale: the calculation that changes the pitch.

What are the stages between contact and payment?

For most small businesses, there are five. Adapt the names to your business, but do not skip stages.

The entire path is the sales funnel, described in avilaops.com/glossario/funil-de-vendas. The bottleneck is the step where the funnel narrows most.

How do you find the bottleneck in one afternoon?

1. Open WhatsApp Business and take the 30 most recent conversations started at least two weeks ago that began with an order or question from a new customer. Do not select the good ones; take the last 30.
2. For each, record on paper or a spreadsheet: first contact date, the stage where it stopped (1 to 5) or “closed,” and the time between their message and your reply at the stage where it stopped.
3. Count how many stopped at each stage.
4. Look at response times for stalled conversations. If the wait is long at that point, the bottleneck is delay. If short, the bottleneck is content: the proposal, price, or payment method.

At a glass shop, the count was: of 30 conversations, four closed, five stopped at contact, three at understanding, 15 at proposal, two at negotiation, and one at payment. The bottleneck was the proposal. Looking at timing, the owner saw quotes went out an average of two days after the request because they required on-site measurements. The fix was neither ads nor discounts: it was sending a price range immediately, per square meter, and scheduling measurement the same day. The impact of delay is covered in Response time: the number that affects sales most.

What should you fix at each bottleneck?

• Contact. If many disappear after the first reply, it is cold or slow. Reply with a question that keeps customers talking, rather than “good morning, how can I help?”
• Understanding. If they disappear during questions, there are too many or they are too difficult. Reduce them to two and offer options instead of open-ended fields.
• Proposal. If they disappear after the price, it arrives late, without explaining what is included, or as a PDF they do not open on mobile. Send the price as text, with inclusions, the same day.
• Negotiation. If they disappear at “I’ll think about it,” a deadline and next step are missing. End every proposal with a date and a question.
• Payment. If they disappear after saying they will pay, payment is difficult: a link that will not open, a slow boleto, Pix requiring a typed key. A payment link with instant Pix solves much of this.

What to do now

Gather the 30 conversations and count them this week. If you want each conversation’s stage recorded automatically, with the bottleneck displayed in a dashboard rather than on paper, the path is moving beyond spreadsheets without losing your history: avilaops.com/sistema-para-pequenas-empresas or contact us on WhatsApp: wa.me/5517997811471.

Frequently asked questions

Are 30 conversations enough to find the bottleneck?

For an initial view, yes. If one stage accounts for half the stops in 30 conversations, it is the bottleneck. With fewer than 15 conversations per month, combine two months before concluding.

What if stops are spread across all stages?

Then the issue is response time throughout, rather than one step. Check the time column. If the average exceeds a few hours at any stage, start by reducing it before changing proposals or prices.

Do I need a system to track the bottleneck monthly?

Not to do it once. For ongoing tracking, yes, because manual counting is the first thing dropped when the month gets busy. Automatically recording each conversation’s stage makes the number permanent.