NOT HAPPY WITH VODACOM

Last Month I phoned vodacom and instructed them to do a debit order as I cant go every month into the bank to make a payment. The lady i spoke to said she would update my details ... WELL she clearly did not as my phone is now blocked! I phoned vodacom this morning and spoke to Malebogo - apparently the payment was stopped which I did not do! I had money in my account when you guys were suppose to debit me! I am so angry because now I have to go and scratch out R508 which I don't have!!! Every month there is a problem with payment so now It looks like I am a bad payer. I am trying to get finance for a car but I cant as Vodacom people obviously don't know how to do their job. I have told them that I will make a payment on the 25th of March (double payment) but they cant unblock my line until I make a payment. I am a single mom, where am I going to find that money now? What if there is an emergency? This is so ridiculous I am so shocked with the service. Once my contract is up, I am moving to another service provider.IM ALWAYS HAVING A PROBLEM WITH YOU GUYS!!!