signed up like an idiot with ATT FOR their Sierra Wireless Card...and was hit for a bill for $1200 when my monthly charge was to be only $60..for 5 gigabytes use...and was aware that if went over then there will or may be charges...they are trying to say I used on one day $944 of internet use?? and I had them send this to Dispute Dept and they decided agains t me and shut down my phone and data use service and say i owe them the $1200 (includes my phone bill charge)..and won't tell me why they went against my complaint...