Horrible service

Last year 2021 during Black Friday I app**** for an upgrade on Black Friday data special. I received a reference number from the online service and I then patiently waited for my Sim only data contract to be upgraded and loaded.after few weeks i learned from MTN consultant that my contract was never upgraded. I am disappointed as I lost out on that black Friday specials, I could have taken a contract at the time with vodacom as they were offering a very attractive data deal at the time, but I decided to stay with MTN since I have been their client for over a decade. For the last two months I have been requesting for them to cancel my contract as it is already expired and I am paying high premium due to expiry of the previous deal that I signed up for. This is frustrating and I’m thinking about changing network service for good. I’m frustrated.