Cell C service not up to standards

Hi... I had two cellphone contracts with Cell C... One of my contact expired / end of contract term... Cell C decided on their own that they will renew my contract without notifying me without my consent not an email/ sms / phone call nothing.... The contract that was ended a R99 over two years it was a SIM card data deal and other contract was a cell phone deal for R469 for two years.... My two years was up for the R99 deal... I noticed that my installment went up R789,99 in November 2024... I contacted Cell C customer care... The agent that assisted me and told me the reason for the increase in my installment... That agent adviced me that because I did not renew my R99 SIM card data deal they started to charge me the new rates... I was quite upset and asked the agent why didn't anyone call me and ask me if I wanted to renew my contract with Cell C or take up a new deal... That agent apologized to me... And offered me a R249 cellphone deal which was a Samsung A35 plus they will give me a smart watch and ear pods for free and just a gift for apologizing for the inconvenience that Cell C caused by not notifying me... So I decided to go with it... I also asked the agent will the smart watch and ear pods come with the phone his reply was yes it will come with the phone due to their mistake... I also told him just remember that you did advice me that the call is recorded... He agreed with me.... The day I received the cellphone I noticed that it was only a phone in the package... I then contacted Cell C customer care again the day I received the cellphone... I spoke with another agent... That agent once again apologied for the agent that misled me... I asked that agent to check on the system who dealt with me and offered me this so they can go back and listen to the conversation we had when that agent told me that "they Cell C" is giving me the smart watch and ear pods as a gift for apologizing to me and that it will come with the phone... I that agent please collect the phone and cancel the contract cause I don't know why I was misled and I am not getting any help from her... That agent told me that she will make a case and collect the phone and cancel my contract... I sent back the phone with Ram Couriers on the 05/12/2024.... Two days later I get a message from Cell C that the phone I sent back will be assessed by the repairs centre... On 10/12/2024 I get another message from Cell C that the phone I sent back can't be fixed and they will send me a new phone.... I called Cell C customer care again and spoke with another agent... Told her my whole story from start again.... Then she filed another case for me and sent me a ref number of the case and told me that it's cancelled and I won't be billed again.... Then end of December they I noticed same R789,99 was deducted from my account again... I called Cell C customer care again... This time I was made like a big fool by all the agents that took my call they were putting me through different channels in Cell C... I finally got someone who told me that my contract wasn't cancelled and I am still be billed that agent was so helpful I gave all the ref numbers that was given to me by the other agent which turned out to be ****.... I told this agent that Cell C customer care number all calls are recorded can they go back and listen to the previous agents what they told me... This agent also sent me a reference number... The agent told me it's will be sorted out from January 2025 and I will only be paying for one contract.... Few days ago I get another message from Cell C stating that I will be billed for the for January 2025 for R669,19... I called Cell C customer care again to find out what is going on... The agent was absolutely rude and cut the call on me when I asked to speak with a senior... Cell C really ripping more of me... They did the wrong and I must suffer for their negligence and incompetence... If I don't pay I will get black listed for their negligence... That is totally unfair what they are doing... Nobody from Cell C had the decency to call me and rectify the problem...