terrible service

i app**** for a 5g router, got the router delivered but my sim card is still not activated. i call and speak to consultants daily who tell me the exact same thing" we have escalated" " we will call you back" "we will sort it out right now" and still nothing!!! i am paying for a service that i cannot use because for some reason they cannot activate my sim card and cannot tell me why.... absolutely terrible, ridiculous and disappointing service. as a new customer i am not happy at all.