Bad customer service from MTN with regards to opening a new contract on Black Friday

I went to open a new contract at MTN eastgate in Black Friday. The in store procedure was quite painless however the service that followed is nothing less than pathetic. I got told that it takes 2-24 hrs to process however there is a back log due to Black Friday which I understood. It is now Saturday 1 week after black Friday and still I have heard nothing with regards to my contract. Every time I phone them I get told there is a back log and I am in the que. Head office tells me they can't help me i need to ask the store, the store tells me I'm in the que. No one can give me a date as to when this is going to be processed. My argument is I have a new business that is now on hold awaiting my MTN contract. Surely when you have specials of this magnitude you either employ more staff to help procedures or you DON'T have black Friday specials knowing you cannot handle the work load. I fail to see how MTN can be a successful service provider if this is the service you are giving to new clients. Completely disgusted and extremely annoyed.