Vinted complaint: Vinted won’t raise query with InPost about missing parcels

I bought 2 items from Vinted that were meant to be delivered using InPost. The items weren’t delivered but I had to wait 3 weeks to allow for delivery before raising an issue about it. After the 3 weeks were up, Vinted sent an automatic message to say they there is an issue with my parcels, and I had 2 days to raise an issue about it, which I did immediately. I followed the instructions on the screen in the app and it said that an issue would be raised with InPost and an investigation would begin which could take a few weeks to resolve. I was happy about that as I wanted them to try and locate the parcels but they issued me a refund immediately instead for both parcels.

After a couple of weeks, I contacted InPost with the tracking numbers how the investigation was going into looking for my parcels and they said that Vinted hadn’t contacted them about them. I asked them to look for the parcels but they said that they can’t and that the request has to come from Vinted. So I went back to Vinted to ask them to raise a query with InPost but they refuse to do so. I have gone back and forth between both companies about 4 times now but neither of them will help me.

All I want is for them to look for my parcels, as they said they would originally, but instead they just refunded me without any sort of investigation into it. InPost are willing to look for them but just need Vinted to contact them. I am more that happy to buy the items again if they get delivered to me or returned to the sellers. The tracking numbers are MD000000069576718 and MD000000055993729.