Telkoms ********* service

I took an Lte package with Bluenet a sister company with Telkom on the 30/06/18 for 40gb data at R269pm, I was billed by Telkom as per contract for the first 4 months, the wifi generally cut off around the 27th of the month which I accepted as the data being used up, then on the 5th month they debited my account for R762, 86, I called Telkom & tried explaining that this contract was taken for 40gb and they had to bill me 40gb at R269 as per contract, I tried several times again held on for management who never took my call, I left messages for them to call me, that never happened either, I reversed the debit order and did a manual payment as per contract hoping then would then call and rectify, there was no response apart from debiting my account for larger amts, I reversed their debits and did manual payments, my account is now suspended and they send me a letter of demand from credit management, its sad how a big company like Telkom can display such ********* behavior