Judy polk-T-Mobile-1731785918

I have a outràgous phoñe bill for $400 they are charging me for Internet service. I gòt this phone September. I paid $180 . for phone and tablet there's a promotion for people a certain age. my first bill was$141 my second I paid $86. now it's $400. I have a text on my phone where they said that they would credit my account. am not paying