unauthorized debit order of R1760

Unauthorized debit orders on my account with different ref no every time there is money in my account 2019 they forced me into a sim only contract of R70 per month after they discovered that i am under debt review and unemployed but still went on to force me on the R70 sim contract i missed one payment the next thing there was like R500 and something going off my account haiboo i reversed that they didn't stop as we speak they taking every month an amount of R1760 all the way from R70 i cant even block their debit orders as they change reference numbers every time there is money in my account. i am not happy at all with Telkom not even using that sim card but i am being abused in my bank account and credit profile looking a mess. i called couple of times the call center tells me nothing they can do