Thanks for the additional details, that rules out certain things at least.
Were you able to try the lost/stolen phone trick that @geopublic suggested? If that didn't work then you may need to send a private message to the moderators, but their response time could be two days, unfortunately. If you want to send a message to the moderators, you can use this link:
To reset your account try the lost/stolen phone trick:
To report your phone stolen. Login to your selfserve account. Choose Plans and Add-ons tab. Choose the Lost/Stolen Phone tab. Choose Suspend Service tab. Wait a few minutes. Report your phone found. Re-start you phone.
