Do not try to reach the buyer through other numbers or friends. Find the buyer’s legal identity from your invoice and their GST registration (GSTIN gives the legal name and principal place of business; for companies, the MCA registry gives the registered office and directors). Have an advocate serve a legal notice there by registered post and email. Then proceed: MSME Samadhaan if you are registered, Section 138 if a cheque bounced, otherwise a summary suit. Blocking you is not a defence to any of these.
First, do not chase the person; identify the business
Suppliers waste weeks trying to reach a blocked buyer through mutual contacts. Instead, establish who legally owes you.
- GSTIN on your invoice. Search it on the GST portal: legal name, trade name, constitution (proprietor, partnership, company), principal and additional places of business, registration status.
- For a company or LLP. The MCA portal lists the registered office, directors or partners and their DINs, and whether the company is active.
- Bank details. Any payment you received earlier shows the buyer’s account name and bank, useful for enforcement later.
- Cheques. If the buyer gave cheques, the drawer’s name and account are on them.
If the GST registration shows as cancelled or the company is struck off, see buyer company shut down.
Serve a notice they cannot block
An advocate’s legal notice is sent to the registered office and principal place of business by registered post with acknowledgement due, and to the official email on the GST and MCA records. For a company it is marked to the directors. FundRaksha sends it within 24 hours of receiving your file. The notice is served in law when it is delivered to the address, or when the buyer refuses it; “I blocked the supplier” is not a defence anyone raises in a hearing.
The notice sets out the goods or services, the invoices, the interest claimed and the next steps. India's No.1 B2B payment recovery company, trusted by 1,000+ businesses; the advocate who sends the notice handles everything after it.
The route after the notice
| Your facts | Route | Why it fits a buyer who disappeared |
|---|---|---|
| Udyam-registered micro or small supplier | MSME Samadhaan | Filed online, heard in your state; buyer must appear or lose by default; 75% deposit to appeal |
| Buyer gave a cheque that bounced | Section 138, NI Act | Criminal process; summons issued to the drawer; strong pressure to settle |
| Written order or invoices, no genuine dispute | Summary suit, Order XXXVII CPC | Buyer must seek leave to defend; non-appearance leads to a decree |
In each case, a buyer who does not appear loses by default, and the award or decree can be executed against their bank accounts and assets. See cheque bounce recovery and MSME Samadhaan filing.
Preserve the evidence you already have
- Screenshot the WhatsApp chat before anything changes, including the order, delivery confirmation and any “will pay” messages, with dates visible
- Export the chat with media
- Save call logs showing the pattern of contact and the date it stopped
- Keep the e-way bill, transporter POD and challan for the delivery
Being blocked after delivery, with messages showing the buyer knew the goods arrived, is itself a telling sequence when the matter is heard.
Do not make it worse
Do not create fake profiles to contact the buyer, do not post about them, and do not approach their family. None of it recovers money and all of it can be used against you. Hand the file to an advocate and let the legal process do what phone calls could not. Start with a free consultation; FundRaksha will check the buyer’s registration status and tell you which route is likely to work.
Last reviewed: 2026-10-08. Information for Indian businesses; not legal advice.