Breach of Contract

So who is in breach of contract now, Telkom is quick to blame if our account is not up to date. But they do not look at their mistakes.

Firstly they say I am a bad payer, or a risk to them, yet my account was paid every month without fail.

I would like to know who gave them permission to debit my account on the last day of of the month and not on the agreed date of the 25th.

I am so angry right now, that I dont even know what to say anymore. Telkom does not deserve my loyalty, really it does not, not after what it has done.