Overcharged by telkom and it's refusal to reverse the charge.

Telkom is inconsiderate, the service is hell. I change my debit account details in July and I wasn't informed or given a formal verbal instruction that the debit order will be active in August so that prompted me to make the payment via EFT in July and in August, only for Telkom to debit me in August after I've made a manual payment to Telkom, that time my account had an insufficient balance to honour the debit order because I did it manually on the very same day they debited my account. The service is appalling, now I have to pay an extra R200 for an issue of which is not my fault. Yamkela Mamfengu from Telkom call centre couldn't resolve this for me, she refused to log a query on my behalf, she sent me back to the branch (Mall of the South), pathetic service and the refusal to take accountability is disheartening, this will be my last contract with Telkom they can kiss and upgrade goodbye hell no!