Mobiles Plus upgraded me to wrong Package and cannot do anything about it

I have had the worst aftersales and customer care experience with Mobiles Plus. first off they keep on harrasing you, when you tell them your not interested they phone you a month later again. when it was my time to upgrade my cellphone contract one of their agents phoned me, I entertained his call, aswell as telling him i do not like taking a phone on a 24 month contract without having to see it first, nevertheless, the agent offered me 200min and i told hin that I need more minutes. I finally settled with a MEGA TALK M Package that offers 500minutes p/m that will suit my needs. i received my handset in a couple of days, all of a sudden my simcard was deregistered and eventually having to do a sim swop and i was back online. after a month when the new contract came into effect i received a sms from MTN that my account has been topped up with 8 gigs of data and 90min on a MEGA GIGS M package all of my remaining minutes and data were gone. Somewhere something went wrong. I phoned Mobiles plus on 27/10/2021 to Query this and they assisted me and logged a investigation ref no ***, and said that it will take 5-7 days due to them having to listen to the recordings. I waited patiently but on working day 7 "5/11/2021" phoned them again. each time at least a 9min phonecall on my account. The agent that answered my call said he can see that there is a query logged, but they cannot do anything about me being upgraded to the wrong package - even if this is not my fault. and eventially said that he will request to reverse the upgrade and that i will go back to my previous package. as of today 9/11/2021 nothing has been done about this, and im really getting annoyed.