POOR SERVICE

On the 6th of Sep i had an issue where i couldn't make calls but i have airtime. That was fixed, starting the 17th Sep i had the same issue again. I have airtime but can't make calls. I then called your customer care line where i spoke to Evelyn, who was so helpful but unfortunately the things she wanted me to do didn't work. I then received a call from Bianca yesterday who advised me all will be fine when i opt out of the voice limit lock. Which didn't work as i still cant make calls. I am honestly loosing my cool right now. Ever since i changed to the data plan instead of receiving airtime, i had so much issues. Can i get this resolved.

Or can my contract be cancelled completely. Before i changed my plan everything was fine. But now that i changed it to a data line i have issues.