No service

Went to CellC Cresta on the 16th of August to upgrade my wife's a contract. They had no stock of the hardware requested and promised to order and inform us once the stock have arrived(couple of days). I phoned about a week later after no feedback from CellC and still no stock, sounded like no-one ordered any. I sent a mail a couple of days later and no reply either. My wife went there on Friday to enquire about the hardware and still nothing. Can CELLC MANAGEMENT get the people at the Cresta branch to start working or are business so good that CELLC does not care for repeat business? Not sure if the lack of customer service is a CELLC thing or only the Cresta branch...