MTN Contracts and service

I received a call three days ago offering me a upgrade. I requested that MTN must e-mail the proposed contract for my viewing and if i am interested i will approve the contract. I was again later the day contacted and requested my approval to do a credit check which i had no problem with and was also informed that i would receive the contract e-mail between 2 to 48 hours for my approval. The following day i was notified that my credit check was approved and MTN automatically added the contract without me receiving a e-mail or being contacted. I requested Client Service to e-mail me the contract but have not heard from MTN.How can MTN automatically apply a contract that i have not seen or approved. I also sent MTN a complaint and after a day am still waiting for an e-mail or a reply to my complaint.