Stupid credit bureau

Soooo long story short,I had a prepaid wifi with MTN last year in September,I cancelled it last year still in November and paid it off,then MTN didn't update it on any credit bureau and I was told to get a paid up letter,after a long and painful hustle with MTN,I finally got the paid up letter in July,that's 8months after the account was paid off,then I sent it to Transunion who were professional enough to update the account as closed,now Experian are telling me a different stupid story apparently MTN,which didn't care to update the account since last year October have rights to only update the account within 60 days God knows from when,it doesn't matter that they were not updating the account since last year but they still get afforded more time while I continue to suffer with the account that's still open on their bureau whereas,an account I settled last year already, this is bull**** and you're ruining people's credit worthiness,while you play hide and seek,you can do better,you're quick to give me generic responses without understanding or asking where the problem started,grow up