Poor service - Cancellation or NO UPGRADE of my contract

I have been a valuable customer with Cell C as I have 3 contracts since 2019 and I have been renewing the contracts numerous times, and today I am so upset that I have been taken from pillar to post regarding not being able to renew 2 of my contracts which consist of the SmartData. The first email I had sent as to pertaining my contract was sent in April where I was informed the contract only comes to an end in July, and send another communication on the 23rd June 2025 to communicate that i will not renew my contract. I did receive a call from a representative from Cell C that they will assist but there was no indication that they will bill me R630,00 instead of my R497 that I was charged monthly. This is very frustrating that when I call today (11 July) i am told that my contract came to an end 2nd July which was never communicated in the prior calls, only now I am told of the difference of device and Data contract. I am so disappointed at Cell C and this is so distasteful behavior from their side, as I never expected this from them. The back and forth of calls to their customer service line has been disproportionate. Instead of my contract ending in July now it is going to extended until August. This whole process was frustrating and I do not see myself utilizing their service ever again:(