my bills you charged me 82 doll

you charged 82 dollars but I went to your xifinity store the guy said and I quote your phone is new is compatible so every month your bills comes 10 dollars unlimited I was very much happy but now a days you deducted 82 dollars from debit card a/c that’s I turn off auto off and you people bagging me please updated your debit card I mean auto pay so we deducted from your accounts 82 dollars another time right couple of months ago I already talked to xifinity representative she told me why you turn off your line because Xfinity charged only 10 dollars so I said don’t turn off my second telephone line if you promised me you sending me 82 dollars mobile and not deducted 82 dollars from a/c assurances me you not dedicated 82 dollars from a/c so not switch out with boost mobile services which already talks to him they said from  12months we charged you 10 dollars bills so you charged me 10 dollars so I not switch with Boost mobile right promise me please we charged only 10 dollars