Chris,

This is Alan Safahi (CEO of ZipZap).  After a quick research, I see that we already sent you Bitcoins on August 15 to this address (1FrdpKgHePTmYBWLDeT4PgtrGtMMtBXBdJ). 

You can see it here:  https://blockchain.info/address/1FrdpKgHePTmYBWLDeT4PgtrGtMMtBXBdJ). 

The likely explanation is that you may have inadverdently clicked on the a link during registration that tells us that you don't have a wallet and we created a wallet for you at Blockchian.info and sent the Bitoins there.  If that is the case, there is a simple solution.  We will email you the login credentials to your Blockchain.info wallet and you can retreive your bitcoins there!

Please let me know ASAP so that we can give you access to your Bitcoins. 

Alan