I bought a lamp for the aquarium. After about 3 months, it no longer worked. I sent it to the seller to get a complaint. The seller admitted that it was damaged. It was two months ago, and to this day I have not received a refund for a new lamp or money. He replies to my messages and keeps me waiting. What should I do?

Which payment service provider did you use to pay, can you still file a complaint through the payment service provider? @jakalicia-0