I’m not connected worst service ever

Worst service ever, my router arrived yesterday Monday 21st Nov it’s still not connected, when I log in using laptop it’s says password is incorrect( which I’m 100% sure I have put it correctly) flew people called me 1 said the tower is currently down, the other said I must remove SIM card and switch of for 15min and I did all of that and the other person said I must wait 24 hours to connect since it’s new which is funny to me because when I was applying for this router sales person said it’s connect immediately after my SIM card is activated

So it’s been 24hours I’m still not connected and NO ONE is responding on my emails and Twitter complaints, I urgently need WiFi to be fixed TODAY please send someone no more excuses and telling me what to do you must send someone to come and fix this now i need to work!! Or cancel it