Shame on you MTN

Hi So I took out a new contract with mtn mid month in August, I asked my old number to be ported from vodacom to mtn and this was supposed to have taken a few hours at the most. when this didn't go through, I called them for almost 2 weeks and during that time, I kept being transferred from department to department with no one willing to help or take ownership. I feel like they have breached the contract as they were supposed to have done the port for me and now I'm stuck with 2 numbers and I don't know what to do with this anymore. at one stage I asked one of their agents to transfer me to a supervisor or manager and she flat out refused saying "by me asking for a supervisor I'm implying that she doesn't know her job" and while I was actually trying to tell it's not about that, she just transferred me.

I'm really disappointed with the service and I'm considering terminating the contract as I believe I have grounds to terminate it if they don't sort this out soon