Transaction on hold

I brought TW zombas for $90 dollars on Friday he immediately clicked that he sent item when he never did, I have screenshots of him saying that he sent it to gamertag similar to mine which proves he didn’t send me item. I put it on hold and have yet to receive notification back from Gameflip regarding the case. I’m assuming I will be refunded as it is in the buyers guarantee. Anyone no how long it takes ?

Also I sent all evidence to Gameflip over the email aswell