LTE DOWN NO SERVICE NO HELP

So since Monday 08th may 2023 the LTE stopped working everything is fine from my side...No one since Monday has been able to assist to get this LTE back up again....I need to pay end of this month for what service??????NO INTERNET BUT YOU WANT MONIES FOR WHAT????KINDLY EXPLAIN TO ME....THIS IS A MTN UNCAPPED NEW LTE WHICH WORKED FINE UNTIL MONDAY, NOW IT WONT WORK....YES THE LIGHT IS BLUE THE SIGNAL IS FULL, I CHANGED THE SIM CARDS TO SEE IF IT WAS THE ROUTER NOPE THE ROUTER WORKS..THERE IS NO INTERNET SIGNAL FOR MY LTE....WHAT IS HAPPENING CAN SOMEONE EXPLAIN....EVERYDAY AND SOMEONE KEEPS TELLING ME IN TECHNICAL IT NEEDS TO BE CONFIGURED WE DO THIS AND NOTHING...THEN I GET CUT OFF AND NO ONE BOTHERS TO PHONE BACK.....WHAT **** SERVICE IS THAT....FIX THIS **** LTE OR REFUND ME MY MONEY.....I WILL GO ELSEWHERE....OH THE ACCOUNT IS ALSO UP TO DATE...I AM STILL WAITING FOR THE CREDIT FOR THE TWO MONTHS FREE SUBSCRIPTION ON SIGN UP WHICH I NEVER RECEIVED AS WELL.