I have sold 2 used mobiles almost 3 months ago in ebay india. The buyer paid to ebay, but ebay holding my payment from last 2 moths. They are forcing me to provide GST. But I haven't registered for GST. I have already provided PAN and AADHAR copy to them for KYC verification. But they are again asking for GST. Aad not releasing my payment of ₹9400. What action should I take?