Hi @revkev
You'll have to call them again and ask them what you have to do to get a replacement or a refund.
If you are placed on hold and not answered again I suggest that you email them regarding your problem.
If you still can't get anywhere contact your government's consumer affairs or fair trading department.
Here is a link the the [http://www.vivitar.com/warranty/warranty_1year.pdf|manufacturer's warranty statement] which may be of some help.
In my opinion, it is a poor warranty that expects you to pay postage let alone ''insured'' postage for a return of a faulty product.