TELKOM BILLING ripoff!

On application form submitted for new service, on front page, section 3 - banking details (debit order compulsory). Telkom did not activate the debit order on 18/9, I then paid the account on 21/9. They have charged me R12.07 late payment. Not acceptable when TELKOM never bothered to lodge the debit order. Phoned the call centre, was told that they will not reverse the R12.07. Principle of the matter that this is not acceptable. (How many more people are they doing this to). Account number: ***