Resolve my issue ASAP

Ive wrote about the company already i was told il be contacted within 24 hours its been a month now and still nothing i was told my account will be placed on hold and investigated and was emailed a day later about i must issue them with my paid up letter nd proof of payment the matter is still not solved they want me to pay them something tht is paid up already since 2021 us as consumers are being used and mistreated by big corporates like this and its a emotional roller coaster with them because if u owe them they fast but if they owe u its a 3 year process for me