Poor customer service

My husband had signed up for the monthly uncapped data bundle for R249 .He had been into the MTN store at Signet Terrace on the 8 June 2023 to do this. While he was there he was informed that he needed to pay a pro rata to cancel his existing data contracts as these only expire at the end of August- He happily did that. Thereafter he was told that he needed to pay another R200 for äctivation fees"for the new contract- He also agreed to that and paid. Upon reaching home we noticed that the sim card in the current device will no longer work in the new router supp**** to us by the store. My husband then jumped into his car and went back to the store- Again we were told we need to pay R150 to do a sim swop- Which again he paid. He was told that the activation would happen after 24 hours. To date, which is now 4 days later , the activation has not happened. Since the Saturday , my husband has been following up with the store directly as well as the MTN call center and we have received no feedback and neither is the line activated. When he had called the MTN customer care , he was told he needed to go back to the store where he had signed the contract. My husband then went to the store today only to be told its out of their hands and MTN Direct needs to be contacted. It is really frustrating having to deal with incompetency at this level. We paid what was required but we are being pushed from pillar to post to get the data bundle activated. My husband has been a MTN contract holder for the past 15 years and the level of service received has just deteriorated in the years.