Bad customer service

<p> I took out insurance for a cell phone that I bought at the store. When I wanted to claim from the insurance it was picked up that I have not been billed over all the time since my purchase. I produced my copy of the insurance form that gave them permission to deduct the cost, which they obviously never did. I have been struggling for almost two months to have this sorted but to no avail. The manager of the store is not helping at all, saying head office must deal with it. I have agreed to pay all the insurance cost, although I was not the one negeligent there, but still no resolution. SOMEONE PLEASE HELP!!!!!</p>