Requested service not delivered and Uncontactable

When I upgraded my phone I requested a dual sim service to be added to my contract. The consultant informed me that it would take up to 24 hours for the dual sim to be activated. After 6 days there still is no signal on the sim. At the moment I am unable to visit the shop and had been phoning a couple of times per day for the past 4 days to get this activated. The shop phone just rings, even when phoning a couple of times. The consultant who helped me also does not answer his phone. He only responded once via sms to state that he's not available. He gave me another consultant's number, he answered but was also not in the shop and could not help me. I've e-mailed the shop and received a blank auto-reply as answer. I've logged a complaint on MTNs website, another auto-response saying they will look into my complaint within 5 days. I've phoned Customer Service, but they can't help since they don't have shop phone numbers. I send a sms to all 3 Tygervalley MTN numbers I have telling them that I've logged a complaint and that I will cancel my contract as soon as I can. To date I have not yet received any feedback in any form from anyone at MTN Tygervalley.