Received a second hand (dirty) coat through the post. I assume it came from Vinted but I didn't buy it. No transaction is showing and no money has left my account. Vinted dont seem to understand and are telling me to contact the seller (their name is on the Yodel label) but I don't know the seller so can't contact them! How long do I have to hold onto this dirty coat before I can get rid of it? (Not an experienced Vinted user). I've tried to think how this could be a scam but can't think of anything.