Set up access to home internet

Fact pattern:

• Over a year ago I terminated T-mobile home internet when I moved and service was not available
• Last week I was informed that service was now available in my area
• Activated new tower Saturday, was told then that I would have to wait 24 hours to add this new line to any existing online accounts
• Today, 45 minutes into a call and still no way to add the “new” account to an already existing account.
• The old phone number is not recognized, the new phone number is stating it is not a T-mobile number.  The representatives have tried to reset my password, get me a new email address, and on and on.  They do not know that they have any other options but are “escalating”.

Anyone have a resolve here?  Reason for my call was that I got a bill today for $50 when it should be $30 with paperless billing and auto pay.  They cannot answer the question as to why.