Multichoice iltreatment

In February i called mutlichoice to do price lock. I spoke to the lady by the name of kagisho to assist me. She did all the terms and conditions and informed me that call are recorded... after doing all that she informed me that i need to pay R170 and i asked why? What ist for and she said she doesn't know she will go and ask her manager. She put me on hold for few min and when she came back she apologised and informed me that her manager said that R170 is for the next month debit... meaning they going to debit R170 instead of R485 and the lady agreed yes. March debit goes through as R485... i called and asked why am i paying that amount? I spoke to the lady by the name of chanell if i remember her name correctly... she informed me that she put a note on her system her manager will call me with in 24hrs. No one called me a week after i called again... i asked to speak to a manager... then came a supervisor i forgot her name... i explained the whole situation and she said she will call me back.. i asked her to call me after 18:00 and she said she will leave a message someone will call me at that time. No one called me... a week after i called did the same process again ... ask to talk to a manager then came a supervisor... explained the whole story and she told me that they will call me again. Now this time they did call me and the lady told me that my situation is not easy to handle because they cant find a recording of me and kagiso and also there is no one by the name of kagiso there... i asked how coz i did a price lock there? The lady promised me to call me so that we can resolve this matter about a week ago she never called me again till now... ill i need to know is why em i treated like this by multichoice but when they debit my money they don't struggle to do that? I don't have more money to call them everyday and every week...