The seller has three days to respond, since you say it's been two already, they only have one more day. If they do not respond then you need to escalate the case so eBay can review it. Once they have reviewed it (usually 24 hours) they will side in your favor and refund your money.
If you don't escalate it yourself it's usually 30 days before it will automatically close out and eBay will not take any action against the seller. So it is important that you do it yourself.