Avoid Sell direct, bad service

My sister bought a cellphone contract telephonic ally from Sell direct. When the cellphone was delivered by the courier she tried to contact Sell direct to activate the contract and Sim card with no luck. The contact numbers provided and Google of Sell direct does not exist. She contacted Telkom numerous times who also gave her a run around. It has been more than a week now that she is in possession of this cellphone but it is still not activated. The bad or rather no service received from Sell direct is pathetic, time wasting and costing her money to contact none existing customer service lines.