Very disappointed with Vodacom

I am so disappointed with Vodacom. I did an upgrade and then changed my mind. I returned the device which took about two and a half weeks to be collected. They sent me a message last week that the device has been returned and I can now do an upgrade to the desired device. On the 1st of February 2020 I called *** to do a contract reversal as I was advised. I was given the reference number ***, and told that the reversal will be done in 24-48 hours. On the 2nd of February I got an sms saying the reversal has been done. But even today the reversal has not been done. I was told not to use the allocated minutes and data for Feb as I am going to be moved to my old package within that 24-48 hours. I can’t make phone calls since I was told not to use the allocated minutes and data. I can’t do an upgrade, I have tried several times cause the system tells me that I have already upgraded and can only upgrade on 20 January 2023. I am very disappointed with Vodacom services.