Poor customer service and unreliable network provider

I ordered a 5G router from Rain and was debited immediately before the router arrived. I understood that they charge a pro rata rate and all of that. The router was delivered but turned out to be faulty, which was concluded after a lengthy call with the customer service agent as we tried to troubleshoot the problem. Thereafter I was told a replacement has been logged and I would receive word from the courier company by end of business that day (Thursday 20/04/2023 - the router was delivered on Tuesday 18/04/2023) about when it would be delivered. No word from the courier company came on Thursday so I called again on Friday 21/04/2023 to ask for an update and they said that the courier company would be in contact as the router had been dispatched. Still no communication from the courier. I called again today 24/04/2023 to ask for an update using my reference number and I was told that the system says that I logged a router fault but it hasn’t been escalated to the relevant department meaning the router was never dispatched to the courier company and the agents I spoke to last week were just lying to pacify me. Listen, save yourself. If you’re looking for an affordable and reliable internet service provider, it is definitely NOT Rain.