ASSISTANCE WITH ****** DEVICE AND SIM

I have been trying to get hold of the rain call center for days now with no luck. my 5G router was ****** last week friday and I have desperately trying to the current sim stopped and getting a sim swap. The call centre number is just engaged and the email assistance just gives generic responses. I have had no issues with Rain and I am a very happy user of their 5G services, I dont want to cancel my subscription but if i dont get assistance I will have no choice but to cancel, because I cant pay for something im not using.