Pathetic service from Vodacom

I was in arrears with Vodacom, made an arrangement to pay, they collected the debit order, until they decided to stop collecting it. I queried this and the call Centre agent said they would collect it in the next 48 hours. It didn't happen, next month same story. On month 3 after debit hadn't been collected, I asked to settle the arrears, paid an amount of R5130 and they cut my line (deleted it completely). I queried this and was transferred from one department to another, asked that it was escalated and to date they have not once tried to contact me with a decent explanation. Instead, they have handed me over to debt collectors to pay the balance of my contract. I despise Vodacom, they are pathetic and have no customer care. They actually do not treat customers fairly. I am definitely taking this higher, they have blacklisted me and ruining my credit record for an account which was paid to date.