T-Mobile at 18900 Michigan Avenue Suite 305, Dearborn, Michigan.

These guys sold me a T-mobile 1 plan (unlimited plan) and said that they would only charge me for one line as long as the other 3 were suspended. My first bill ended up being $221 because even though the lines were suspended I was still getting charged fully. They have properly cut off the lines from the bill but this is not the plan I was promised when i originally signed up. Very frustrated with their staff and their lack of knowledge of their own plans.