Call Centre - Fana

I am very upset with Vodacom somehow my debit order did not go through for the previous month I insisted Vodacom to deduct off the amount of my account on the 26 today when I checked my account they deducted R620 for last month & this month and add a penalty of R100 my problem is I am earning a very small salary and cannot afford surprises like this. I spoke to Fana from the call centre and explained my frustration with Vodacom it is not the first time Vodacom service is bad. I was busy explaining myself to Fana and he put the phone in my ear down, I personally think it is very unprofessional the way I have been attended to and NOBODY informed me that there will be penalties if a debit order does not go through. So far I paid R300 extra on bank charged and it was R200 cause the amount did not go through + Vodacom charged me R100 which I think is ridiculous and way out if I did not pay over 3 months then it is fine but I pay every month my cell phone contract. I do not know how I will get through this month because of Vodacom no doing their job 100%. I will wait till this contract expires and not upgrade I will rather go somewhere else