Still awaiting feedback on an order after 24 days

My husband and I visited Brooklyn Telkom 24 days ago to enquire about one of their specials advertised for Hauwei LTE 50GB. We were told it was out of stock but we could come back 2 days later to collect it with our filled in forms. The next day I made sure all my documents were in order. Arrived at the store again only to find out there was no stock. They said they would call me within 2 days to let me know when my order had arrived. They never did. I called every 2nd day for 3 weeks, spoke to someone different every time and they all kept passing the buck and blaming the new management system being put in place. It is 24 days later, they have all my documents with them and I still don't have any solution to my problem. I am trying to run a business with no Internet, which is proving to be almost impossible. The only reason I won't cancel my order is because they have all my forms, but at this rate I want nothing to do with Telkom in the future. Worst and most passive service I have ever received.