Displeased with pathetic service

I have been asking for my refund to no avail following Rain Internet agents sending me a router when my area is not having coverage for their device. The device has since been collected and delivered to them. I've been calling and left on the call for longer than 15 minutes and sent from pillar to post without any assistance from Rain Internet. I have been given a billing reference number as proof that my request for refund was escalated to no avail.