MTN bad service

On 3rd October, I signed up for their new sim only data contracts. Of which I was requested to make an upfront subscription payment, which had no problem to, upon submission of the contract, the cunsultant advised that the system requested an amount which is double the subscription amount. I still had no problem with it. Upon final submission, their systems somehow did not allow the xinsultant to submit my contract. I have to say thay the consultant has really tried to assist me at the time. Queries have logged tge following day, which was the 4th. Up until, the consultant cannot activate my contract. This is unacceptable, I had to pay 2 months in advance, and still I have nothing to show. I want MTN to get in contact me, resolve my problem and advise what they going to as I am very unhappy. This is unacceptable service, how can they advertise deals, request for upfront payments, but the service does not get rendered.