Unhappy Telkom Customer

I have been paying Telkom every month for the last 3 or more years via electronic funds transfer because they had been putting incorrect debits through my account.In July20 Telkom put an extra charge of R22 on my bill which I disputed and didn't pay.They tried to debit my account and put an extra charge of R202.7 .These extra charges have now added up to over R600 because of the incompetence inside Telkoms accounts department.I have attempted to use my dispute facility which no longer allows me dispute these incorrect charges.They have my email address and no one has even attempted to correspond with me to resolve the matter.