Lack of Service due to non functioning call center

I email customer care asking to cancel my contract since it had already expire, but I wanted to keep my number. They sent me a form to fill of which I did and only to find that the form was for a permanent cancellation of my number. I was never informed of the consequences of this form and I've only been informed now from an mtn shop. This number is very important to me since I use for work mostly. Also clarify what happens to my airtime since I had just received a topup, I paid for this airtime a I need clarity.<br> <br> The worst thing is the fact that your call center is non functional and hence it is impossible to get any clarity. Please sort out your protest issue.<br> <br> The number I'm querying about is ***. Cancellation reference number I received from mtn is ***7<br> <br> I personally like Mtn, it's the only network I've ever used. So please assist. <br> <br> Contact no. ***