Upset client!

I had a contract with Vodacom in 2016, which I paid up early and closed it due to Terrible service from Vodacom. Now 2 years later, it seems as the number has been linked back to my name as a prepaid number. On the 13 November 2018, I called customer care on 082135 spoke to a lady and she advised that the number ********** 677 will be removed and turn around time is 48 Hours. I still received sms with regards to that number. I then called back on the 19 November 2018 and was advised the same, wait 48 hours and it will be updated. On the 21 November I call vodacom once again, cause nothing happened. They confirmed me that it will be removed, they called me back stating it has been removed and I should have no issues. Yet, on the 25 November I receive around 10 sms's once again. So on the 26 November I call vodacom again, they advise me that the request was sent and closed, but I still recieve sms. I been transfered serveral times, but no one can help me. Finally I get to someone and I ask for a Team Leader, the Team Leader "Bongiwe" comes to the phone, doesnt want to give me her info as I requested. I then asked for her manager and she then says that she has the whole day to wait cause I dont want to explain my story. I explained my story 6 times in one day and now you expect me to explain it again? Where is the service or systems that shows a client request? Then I speak to someone who advised that is the floor manager and will removed the number. Does it take so long?