Non correspondence from Lewis when its time to remove a negative info on credit bureau when the account is paid up

Im not happy with how lewis does not respond when they have to clear your name from credit bureaus when they have been paid, due to financial difficulties i experienced, I couldn't afford to pay my account and it was handed over to Nimble, i then consolidated with Bayport and the account was paid up. Now i have been sending numerous emails and calling the to please remove the adverse information they have place on my credit record, i get no responce from Lewis. When i try to dispute the information from the credit bureau using the Bayport and nimble paid up letter, the credit bureau is requesting a paid up letter from Lewis.