Extremely bad service

Hi Peter. I had a contract with Vodacom for many years which expired in the beginning of this year and which I ended due to my financial situation. When I called Vodacom the lady was very rude to me. One of my colleagues at work heard every word she said and wanted to take the phone from me. Nevertheless she almost insisted that I keep the contract notwithstanding the repeated explanation of my situation. She also said that my number will be deleted and given to someone else. Now that I am on pay as you go ... I bought R5 airtime over the weekend. Immediately thereafter I checked my airtime balance and it was R1.50. I agin bought R12 just now checked the balance and it was R3.50. Is this the way Vodacom treat their clients because if so I am doing a card SIM to a better service provider that I know