Unable to get hold of selldirect

I renewed my Telkom data package with sell direct. They dealt with me very professionally , told me my device would be delivered within 5 to 7 days and it was. Told me to contact them on *** if any queries. I phoned them for 2 days because i wasnt able to activate the sim. I went into telkom , they followed up for me, informed me someone will be contacting me the same day from selldirect, and i havent heard a thing. I am sitting with a device that i am unable to activate and no one answers the phone on the number provided. I also emailed a complaint to sell direct 3 days ago and no response. Their after sales service is very poor and i still need help with my device