I purchased a year of GameTap service on 3-14-11 and requested a refund on 3-16-11 (which I have documented). That is 2 days, or, 48 hours which is within the time frame given by GameTap Customer Rep Luke in which refunds can be given. They refuse to give me my $79.95 back.
I placed four calls, leaving voicemails since it is always automated and never got a call back. My first email to them was to a Rep named Scott who never responded to my emails after the initial one was sent and it took messaging a few Admins on their forums to get any kind of response.
I highly suggest not doing business with them and if you have, to contact the BBB and FTC to have these criminals shut down.