******** practices

Im so fed up with African Bank's, crazy practices. I have a credit card with them, and it gets debit from my account every month without fail. My debit order went off last month on the 20th March. My new debit is only due this month, it is only the 9th of April. However I have been harrasssed with calls constantly all day long from African bank, and when I answer the call, each time, the agent drops the call, each and every single time, clearly signifying that they dont want to do their job, and just want to show they have made the call. I subsequently tried calling their call centre myself to sort this out, and I work Mon-Fri and the stores are closed once I leave work, and each verified number I have tried, either says it does not exist, or other numbers get to the call centre then agents drop after answering and various different so called anomalies that somehow just seems to stop me from ever reaching them. Oh but they have today sent me a very stern warning that im behind on my payment and they will take legal action to get it, as well as impact my credit record. This is absolutely ubsurd, I understand that mistakes are made and things can be missed, but im on a debit order that I can see has gone off and my new payment is not yet due, I would be able to explain this and or send proof, IF I COULD ONLY REACH THEM, or they bother doing their jobs. I will be forced to take further action against them if my credit health is impacted in any way! Which might I add, they have done before.