Absolutely ridiculous

I am in arrears with my Vodacom account for about R2000. My vehicle was repossessed a month ago and I have not been in a good financial position. I contacted Vodacom some time ago and made an arrangement for me to pay R100 a month which is all I can afford. To me I am still honouring my commitment. then I asked the guy to send me the banking details and he said he will email me. Up to date nothing has come exept an sms from VVM demanding more than what I was owing. What nonsence and pathetic way of doing business. I am so disappointed with Vodacom that I don't feel like even paying this anymore. And VVM can go and blacklist me im ok with that coz im already in the process of being blacklisted from the bank because of the car.