Vinted complaint: Seller – Mummyto3boys22

I bought an Apple Watch to be given from my mum to my dad as a gift for their wedding anniversary. When the watch arrived I switched it on to make sure it worked which was fine. As you only have 2 days on Vinted to say that everything is ok , I said it was. However at a later date when it was their wedding anniversary, the watch was given to my dad and when he came to try and pair this with his phone we found it was locked to the previous owner. I have contacted the seller who have admitted their error but still haven’t resolved this by unlocking the watch or giving a refund, again something they offered to do. As a result I have made numerous complaints to Vinted regarding this seller and the company are refusing to do anything about it. They won’t remove the seller from their site or provide a refund. I’m now out of pocket Andy dad as a watch he can’t use.