WhatsApp BusinessSmall shops are sometimes cheated by customers who send fake payment proofs, or by "refund" tricks. A few habits remove most of the risk.
Always check your own app
A screenshot is only a picture. Open your bank or UPI app and look for the credit before you pack or send anything.
Never share codes
You never need to give a customer your PIN, an OTP or a password to receive money. If someone asks you to approve a "collect request" or to enter your PIN to "receive" money, stop: that sends money out, not in.
Be careful with refunds
If a customer says they paid too much and asks you to send the extra back, check your app first. Many tricks begin with a wrong-amount story.
Keep a record
Note the payer's name, amount, time and order for each payment. Save the messages. If you suspect fraud, report it through your bank and the official channels; the after a fraud guide on this site family lists the steps.
We do not give financial or legal advice; check with your bank for its own rules.