Simple request!!!

After paying both loans off several months ago, I have requested from Nimble customer service for settlement letters multiple occasions. Each time I was patient and was told to wait 28 days.. its been four months, Today I was dropped on 4 consecutive times and then on hold for 45 minutes. Chat route since May has not been responded to.. whatsap chat support has yet to respond to my simple request. A simple request..their customer service is putrid. I have done my part, this company needs to do theirs so I can move on and get my name cleared. Simple request for settlement letters, they were quick to call after hours !! Sick of waiting!!