I recently sold about 0.13 bitcoins (about 500 EUR) but the guy who bought it said that he would complete the payment in 2 hours, after he said that he confirmed the payment without doing it.
Now I don't know if release or not the Bitcoins, I didn't recieved nothing in my Visa card, but I'm still waiting.
What will happen if I don't release the bitcoins?
Please help me, thanks.
Dispute the transaction.
this is quite simple to do and as long as a certain timeframe has passed you should be able to dispute the offer. However, talk to the guy first. Perhaps he did this by mistake or whatever and tell him to cancel transaction.
If not, dispute and contact support immediately.