Non arranged debit

My contract expired in May 2024. I did not call to officially cancel the contract, June I was debited again in July and I reversed the money (for 1month). Weeks later services were stopped. In a month time I was called and made an arrangement to pay the R1,800 in 3 months installments as I could not pay the whole amount at once. August 2024 the arranged R600 payment commenced. To my disheartening surprise today, 15 September an amount of R2921,41 was deducted from my account. No arrangements no prior notification whatsoever. I trusted Telkom to stick to the arrangement, Why is this even happening. I cannot call them using my non Telkom number because the rates are way too high, R2,85 per minute and we know how long I can wait just to get to talk to a consultant. I need Telkom SA to gladly refund the money debited(R2921, 41) as soon as yesterday... I have arrangements to adhere to and also Telkom SA should cover all charges I might have incurred through them debiting the non arranged amount.

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