Badd attitude and ******* transferring of money

I made arrangements with Absa credit card division to pay of my credit card account. due to unforeseen circumstances my account had fallen behind. on the 23 of December Absa credit card division deducted the full amount from my Absa Savings account without any permission from me. no notification on my banking was sent either. on the 24th I received a SMS stating that they have deducted the amount. this was at six in the evening. I could not phone them regarding this before the 28th due to the holidays. I phoned the call centre the call was also cut of. I phoned back and spoke to a person called Claude. he was so rude and had a bad attitude from the beginning. I explained the situation and asked him who gave permission to move the money out of my account. he told me that it is their right to do that. I was put on hold and was talking to someone that was with me in the room regarding this matter. the next moment he comes back on the line and asked me \who the F$%Y do I think I am. Absa will take money out of the account whenever it suits them if the account is not paid". Is this the way ABSA should treat their clients. by *****ing and swearing at their clients. this is against CPA ac"""