American Customer Support

Is there a number to call to get American support? I feel there is a huge barrier here with these folks understanding what I am saying.  They messed up my services during an upgrade causing my bill to skyrocket. Resulting in  me trying to dispute charges for over a year now going on 2. I'm stuck on this annoying assistance plan. I just want to know what I owe. Make arrangements to get it paid and get back to my wonderful xfi services.. Someone please help me!