*****ing my money no feedback ore help from their side

Hey my name is Christopher i have been struggling with mtn since February, i upgraded my contract last year jully 2019 contract cost R487.44 pm on contract numbers *** and *** and as of February 2020 they started charging me R732pm i tried speaking to consultants whent in store and no one os able to resolve this problem and re fund me my money thats been debited more than the contract amount, telling me there is a bf service promo fee added to the account and they dont know why, that means mtn has robed me of R1711 so far i have spoken to Mtn consultants so many times with no luck getting this issue resolved! This is by far the worst service yet that ive received and it clearly doesnt mater to them getting back to me to resolve this they just keep on deducting more than what they should, money i work hard for they *****ing from me! I need this resolved ore i will stop this debit order and you can go look for your money els where please contact me on *** to resolve this issue asap!