Disgusting service from MTN

Dear MTN I am so angry at this particular moment with your service and your workers. I am paying for a fone that is not with me. Jessica John said I must provide her with the fones IMEI number of which I did and she has not get back to me. I went to the store in which I took the fone to and the consultant Didi (cool as cucumber) told me JHB is offline and when I called JHB they are picking up the fone instead they are dropping the fone in my hear. MTN you are violating our rights as consumers. I want my fone or you cancel your contract so I can find another service provider that will put my needs first.