Ali Express — shipping costs

Address:

China

After i received an item damaged i opened an disput and the seller told me to ship the item back. I asked about the shipping cost and after a lot of talking he agreed to pay me the shipping costs. And now after more than 2 months, the seller doesn´t answer my messages and don´t give the shipping costs. I have contacted the aliexpress chat and they told me that they would make sure that they i received the money. And so far i have got no answer.