NOT RECEIVING ITEMISED BILLING THAT'S BEING PAID FOR

I have been trying for months simply trying to get my itemised billing enabled. I have been to various MTN shops numerous of times, hours of frustration. I have made numerous calls and wasted most of my airtime having to wait on MTN consultants. Also, they have been escalating things to the billing department and logged several issues every single weeek, but have received no feedback. I have received more than 13 reference numbers via SMS and still no feedback. The amount of time spent trying to sort this matter out have turned into weeks and now months since February 2019 up until now. This is an ongoing cyling that is not being resolved. I'm paying for this service for many months now and have not received one itemised bill yet.

I have been receiving the MTN link, along with the OTP etc. When I select the itemised billing tab, it shows me that I'm unsubscribed to access my itemised billing??

I really hope there is someone that can advise.