Not answering

i bought a cell phone contract from vodacom network (telephonic order) i was instructed to call *** once i received my cell phone. It was delivered on the 20th of March till date when i call in to activate my line no one is answering. The service i was promised is not being rendered. I am shaming vodacom on this one for poor service. Its been seven days now my simcard is not activated and i don't know where else to go.