Lack of service and knowledge ,no follow up

As a client i have been with MTN for 18years, since Nov 2022 i hav had nothing but the worst experience , i am currently holding on 25mins for a manager to address my issue, i app**** for an uncapped router in nov 2022 , i only got my router on 15 Dec however it only started working 31 Dec, MTN Cornubia store manager had endless communications with head office attempting to resolve , the area manager approved a credit on account for the incorrect billing but to date it has not been done, during this time the router constantly gave problems, the store manager reset twice , i have been calling da call centre every second day with same issue "connection with no internet" last week i called everyday because we would rest and hours later same problem occurs eventually last Friday an Agent told me to take the router to the store since its faulty . I should of got a replacement immediately given the history /track record however i was told the router will be booked in for assesment which will take 21days. I was upset and requested for a loan router during assessment period, i was then told that MTN does not offer loan routers so i asked the new manager am i supposed to pay for a full month service yet MTN is only providing service for 9 days in the month , her response was it is a Mtn rule. This is day light ******* , Mtn is robbing client, how can clients b expected to pay for a service that they are not receiving , worst service ever , please just cancel the entire contract and ill go to another service provider cos i hav not had a month of full coverage and no issues, i come home from and want to relax not sit on the phone with Mtn for almost an hour everyday , Mtn has zero customer service , you need to visit a ****a shop in a local area to learn abt customer sevice,