Sample template — not a real ZentroTECH client
The numbers, names, and quote below are illustrative.
We’re a 2026-founded agency. This page exists so prospects can see what a real ZentroTECH case study will look like once our first engagement closes and the client consents to publication. Numbers are based on documented industry baselines and our own targets, not on a specific signed client.
Case study · Sample template
How a Bangalore dental clinic recovered ₹2.1L in unpaid invoices in 21 days
[Sample template — replace with first real client.]
Client
4-clinic dental chain
Anonymized · ICP example
Location
Bangalore
Indiranagar · HSR · Whitefield
Timeline
21-day build
21-day refund window: passed without trigger
Before ZentroTECH
₹3.4L
Outstanding invoices
280
Missed calls / month
11 hrs
Avg WhatsApp reply time
After 21 days
₹2.1L
Recovered in 21 days
88%
Missed-call recovery rate
7 min
Avg WhatsApp reply time
Stack used
Meta WhatsApp Business
BSP-routed nurture + reminder flows
Bolna Kannada voice agent
Inbound missed-call recovery, 24/7
Razorpay recovery flow
Payment links + auto-pause on receipt
See full stack and partners.
How the 21 days played out
Days 1–3: ZentroTECH ran a lead-flow audit across the chain’s three clinics. We found 280 missed calls a month going unrecovered, mostly during lunch and after 7pm, and an 11-hour average WhatsApp reply time on enquiries. Most overdue invoices were follow-up appointments where the patient simply forgot. Outstanding receivables: ₹3.4L.
Days 4–7: Wireframes for a 4-page lead-engine microsite, automation diagrams for missed-call recovery and invoice-chase, and Kannada voice agent scripts approved by the clinic’s reception lead. Sign-off in writing on Day 7.
Days 8–17: Built the Next.js site, wired Meta WhatsApp Business for nurture, deployed a Kannada-first Bolna voice agent on a virtual number that forwarded missed calls, and integrated Razorpay payment links into a 6-stage reminder cadence (Day 0 / 3 / 7 / 14 / 21 / 30). Daily Loom updates throughout.
Days 18–20: UAT with real patient data. Reception team trained in one 45-minute session (recorded). Soft-launched the voice agent in shadow mode.
Day 21: Go-live. Over the following three weeks, the recovery cadence pulled ₹2.1L of overdue invoices back into the chain’s account, the Kannada voice agent recovered 88% of missed calls, and the average WhatsApp reply time dropped from 11 hours to 7 minutes. The money-back trial expired without being triggered.
“[Insert real client quote here]”
— Clinic owner · Bangalore · [pending real attribution]
21-day refund window
First measurable result hit. No refund triggered.
Day-21 measurable result was hit, no refund requested, retainer rolled into ongoing Growth tier. See our published refund policy and pricing.
Same playbook. 21 days. First measurable result, or full refund.
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