Bad service from vodacom customer service side / upgrade department / technical depart

I went to a Vodacom shop on Friday 15/9/17 for a renewal of my contract where i was assisted by a Lady by the name of Quenita great service received, but when upgrade had to be done their was a problem. On the system in connection with my upgrade not being able to ubgrade for some or other reason . Quenita called the helpdesk and logged the issue ,today is Wednesday 20/09/17 and no joy i called the customer service desk twice since and calls get dropped after spending 30min plus and nobody bothers calling back . I am really shocked after 6 days nobody came back i dont blame the anybody at the outlets as its a problem from the technical guys at customer services BAD BAD BAD