Disappointed customer

on the 14th October I went to mtn store to apply for a cellphone contract. I got approved immediately and was told the phone would be there yhe following week. weeks later no reply no cellphone ive gone back to the store was told its coming the following week. I called the head office im given a run around if numbers dont work, no one answers or they dont know what to do next. I wrote on the Facebook page was told a follow up would happen and im still waiting. this is bad service the worst I have ever had. Don't advertise a phone you do not have because its misleading and leaves a customer very disappointed.