Unacceptable service

We app**** for a MTN contact in store on Saturday 19 September, completed the required documents. Sent through the letterhead on 21 Sept. Phoned to confirm receipt, but 6 phone calls without answer. 22 Sept phoned again 5 calls no answer and went to the store. Phoned from inside the store to confirm the number, it worked. Found that the sales person wasn't in and no one attended the application. Since had many promises of call backs, one happened. Good call, contract approved 28 Sept. Now the port from Vodacom to MTN. Today 2 days later nothing yet. As the line is a business line, now on pay as you go for the transfer period, this Is extremely inconveniencing and expensive to run. Again a promise of call back with an answer yesterday that did not happen. Can someone please assist to get this resolved. It is extremely frustrating to be up in the air like this, especially when other people talk about their port being done in 4 hours.