Being misled telephonically by Sales Department/No way to complain

I have been trying to call and have tried to explain my complaint numerous times. Each time nobody could help me. They just said that it is not their department and gave me a different number to call. I even got cut off when I tried to explain my complaint. I even went to a Vodacom shop, and they said I must call to complain because they cannot help me.

1. I had a Data line for many years for my alarm system. This data line sent me an sms whenever I set my house alarm or a message when the house alarm was triggered. The line number ending with 7778.

2. On 26 February 2024 I cancelled this Data line because I was moving house and did not need it anymore. I removed the sim card from the physical alarm box that was installed in my house.

3. When I called to cancel this line, I received a Reference number (Ref: ***) that it has now been closed.

4. During this cancellation call, the person from Vodacom then said that I qualify for a special upgrade, and I thought that it will be on one of my other existing lines (my daughter’s line ending with 3035) or mine ending with 1865). Never did I think it will be on the Data line because I cancelled it. I was completely misled. It was only afterwards that I received the bill that I realised that it was the Data line number that was now a airtime number. The special upgrade included a handset and a PS 4. I accepted the upgrade with the benefits and premium because I thought that it was my daughter’s line or mine that was being upgraded. I remember that I specifically asked him that it will be for my daughter’s line ending with 3035

5. I specifically asked him again at the end of our conversation if my Data line has been closed and he confirmed it.

6. I ask that you please investigate this matter because I never requested this for my Dataline. I want the Dataline be cancelled along with the premium I have to pay for it each month. I also want to be reimbursed for the premiums I paid since March 2024.