Inconvenience

I had a contract which ended on 30/11/2017 and I asked for my number to be put back to prepaid,but now they cancelled my number. My number is now not working and they are taking too long to help me get my number back,I can't afford to lose my number,I am so disappointed and it is costing me because I am missing important calls that I must attend to urgently. Can this matter be resolved urgently. The telkom case number is ********** 9