Contract Cancellation Issue

I have a concerning issue regarding the cancellation of one of my contracts with Cell C. My contract initially ended in the beginning of the year, and I clearly communicated that if I were to take out another contract, I could only pay for it after the existing one expired. However, to my surprise, I recently discovered that I am being billed for three contracts instead of the expected two. Despite numerous attempts to contact the cancellation department via phone, each call has inexplicably ended before I could speak with a representative. This issue persisted even after multiple attempts, including a call made yesterday. In an attempt to resolve this matter, I sent an email to Cell C customer care detailing my situation. Unfortunately, the response I received was not only shocking but also failed to address the specifics of my inquiry. I explicitly mentioned in my initial email that I was referring to the contract that had expired and automatically transitioned to a data contract. It seems that this crucial detail was overlooked. I must express my deep frustration and disappointment with the level of service I have encountered. This is not the first time such an issue has arisen, and I am growing increasingly concerned about the competency and efficiency of Cell C's operations