Horrible Customer Service Ignoring Complaints

I am having an ongoing problem with getting my refund from Rain after returning my 5G router within the cool off period. I have engaged all of their customer service portals, have received a reference number and a promise to process the refund and still I have to send a daily message to their Twitter profile to get a paper trail of their inefficient track record. Customer service has been horrible at all levels with agents taking days to reply to any requests for an update or as I am experiencing now being ignored. At one point the agent handling my case would not order a collection team for the router for a week until I enquired about it and then i wasn’t informed and had to drop everything to receive the collection. I want my refund like I was promised and have engaged all of Rains customer service options.