Worst Customer Service Ever

I have been trying to upgrade my phone since the 25 of May. Today is the 23rd of June and so far I have not been helped. I am so tired of this that I am thinking of canceling my contract even though I have been with Cell C for the last 10 years. After threatening to cancel my contract because of MTN takeover rumors, got a call from head office and an upgrade was done. This was the 25th of May. I was told that delivery would take place 7 to 10 working days. After 10 working days passed with no delivery I phoned to find out what is going on. I was told someone will get back to me in 24-48 hours. Again after 3 days of no contact I phoned again and again was told that they would follow up and someone will get back to me. Another 3 days and nothing. So I phoned again. This time I was told that the upgrade department is not in office and that I should go in store and cancel the upgrade and do a new upgrade in store. So I went to a store. The clerk at the store told me that he can not cancel the upgrade, I have to phone the follow up department and cancel with them and then he wil be able to assist me with a new upgrade. It was a Saturday so I phone the followng week but was just send n crcles and got nowhere. So I phoned again the next day and was told that the request will be send to the line manager and then they will send it to the follow up department line manager. The will contact me in the next 24-48 hours. Yet again I waited it's been another 4 working days and no one has contacted me. I do realise that we are living in covid times and things are difficult. But is it so far fetch to expect to be contacted in a timely manner. And how difficult is it to cancel an upgrade. Hopefully cancelling my contract will be easier because I am fed up.