The Airlink Con

In December I requested a refund. They told me no problem but that it would take a couple of months. 7 months later, I am still waiting for the refund. I phone and the phone is not answered. I follow up with their email and receive nothing but silence. Why does Airlink that it is good business to make it difficult to get your refund. Do they not think that the customer will lose trust in them and look for alternatives.