VERY DISSAPOINTED

I had a cellphone contract few years ago and i decided to cancel the it at the end of it ,surprisingly the very same account that was cancelled its still shows as an active account on my credit profile .I took the initiative to call Cellc and i spoke to few *********** consultaned who transferred me from one department to another .i then spoke to then spoke to one lady who told me to call Trans union and ask them to clear the account i did exactly that and i was told they will need the settlement letter before they clear the account .I called cellc again and i was told to go to the branch .I'M SO ANNOYED AS THIS WAS SUPPOSED TO BE SORTED OUT BY CELLC AFTER CANCELLING MY CONTRACT