Line Suspended

Hello Peter , I've got two contract one is the 3G which I didn't know if I use the 2gig and finish it they start to bill me and I ended up owing +-R8000 which I made arrangements to pay monthly , end May I paid R2000 and 11th July I paid another R2000 for end June Yesterday I received a call from a guy from vodacom asking about my account after that they cut my line but I made the arragements , is it the way they treat and value their customers coz when a ***** happed to my account due to their negligence I didn't cut ties with them but with me they do the opposite I think I must cut ties with them if they don't value me as their client.