Poor service delivery in every aspect

I received a telephonic contract from abovementioned company which i accepted. One question that was asked when did i want the debit order to go off on my account my answer was on the last day of the month. Earlier this month i received my electronic account that i am a month in arrears and got penalty of a 100 rand on my account plus my new month bill added to it. I went to my bank to draw a statement only to find out that on the 28 of the month my account was debitted and my salary was not in my account yet armed with my statement i went to the vodacom store where i was told its logged into the computer that debit payment was for the last working day of the which i correctedas it was not mu fault. 2 days after the correction at the shop i received a phone from a very arrogant lady wich i explained what happened but she wanted a payment immediately and also treatend me that should this happen again penalty charges would be added to my account. Also that she is educating me on paying my account on time. I got so furious as no one appoligised for their colleuges mistake in the first place because my account was always paid on time. I had a problem with airtime on this very account that disappears i was told and the incorrect amount being billed. I was told a goodwil gesture was put on my account that i have not seen to date neither was the airtime going out of my account corrected as it is still happening. Really poor and bad service and not taking customers problems in account to rectify it. Thank you David Kruger *** ***