Awaiting a refund for 3 months

I had a data contract with vodacom which I called into the call Centre to cancel in November. Come December and January they debited my account and I am given an excuse that nobody can trace my cancelation call, pathetic excuse. I called Voda on numerous times and I would get stories like, We will call you back or this has been escalated to the department that deals with refunds, till today, just like the guy who invented 'Please call me', I am waiting for Vodacom to refund me.The company is enriching itself with people ' s hard earned monies. I cannot wait for the day this is finalized so that another mobile operator can get my hard earned money because Vodacom has got no idea what they are doing. Dealing with an issue from November 2019 to date. Clearly someone else deserves my money.