Lack of Customer support

I took out a new contract on my secondary number in Nov 2024, signed up for the Yellow deluxe package only to find out they activate SKy Silver. Went into the Branch to correct it in Feb 2025, confirmed corrected, yet still incorrect. Finally managed to get a response from Customer service indicating I need to resolve the matter with billing. Spoke to a lady indicating it will be corrected and the funds credited to my account. No email sent to me only phone calls at times I was unable to answer. 2 months later and MTN has not billed me, nor corrected the account and now posting unpaids on my credit report... Despite only getting a response when I wrote a snippy email, again now, no written feedback and now messing up my credit report. Still indicating I owe them, when in fact the mistake was made by their outsourced agents. Perhaps time to move on as it isn't even possible to select a chat to an agent and no response from the billing department when you do manage to get through to them