My HTC Desire is locked due to my son

[AC Question]

My kid did too many pattern attempts on my HTC desire. I bought it from ebay but I was registered on my google account. it was a AT&T phone but I have been using it with Net10, (don't know if that matters). My google account e-mail is not working. I just paid a lot of money for this phone. I need to know how I can fix this please.

 

[VDub2174]

The email may not be working because it's an AT&T phone being used on Net 10.