Telkom premium increased without my permission and telkom call centre number not answered

I have entered into a contract with Telkom for mobile data for R316 monthly in the past two years. Telkom deducted the correct amount since inception, however, in May 2018 Telkom deducted R805. I went to the branch where I open the account Mall@reds, but I was told they are not handling bills. The guy gave me a number to call center (081180). Since then I have been calling this number but no one is picking up. I end up reversing the money.

End of June 2018 Telkom deducted R856, which I have reversed as well. I still trying to find out from Telkom why is my contract monthly premium increases without my permission.

I got another number ( ********** 186/ ********** 4000) but it is not working. after trying phone many times I send them email and received Dear customer,

This is an automated response to let you know that we have successfully received your email. You will be receiving a response from us as soon as we attend your email. Please note that our working hours are from 07:30 till 16:30 from Monday till Friday and we regret the delay in reply over the non-working hours.

Kind Regards Telkom Escalation Centre

E Mail: **********

But till today, no one has called me. Last Friday and Saturday, Telkom deducted R2500 and R167 respectively.

13 Jul TELKOM TELK ********** 02V180713 naedo debit - 2 500.00

14 Jul TELKOM TELK ********** 02O180714 naedo debit - 167.70

I do not know what to do now as I tried all number and email.

Regards Unhappy Customer