Good product reliple suplier

This is my second review. The trade is not completed because I had told this supplier that I will return the phone because the phone is not an original Samsung used S21. He said I should pay the postage fee for a return with condition I am very dissatisfied with this purchase It's not worth the amount I paid for it. The battery of the phone is very poor. He charged me $50 for postage If I had to pay another $50 postage to return the phone,it's simply a waste of $100 Please intervain on this transaction because I want to return the phone This supplier should be penalized for selling a defective phone I am utterly disappointed.. I just wasted 260 for nothing