Poor customer service

I moved to the UK two years ago and paid this company to help me close my CoJ account. Whilst I under the CoJ is not easy to deal with and there have been lots of challenges since COVID, I am gettin no responses on my request for an update. They ignore me completely! I have already paid for this service (up front) yet have have had no update since early this year (despite numerous requests) they even sent me the new home owners CoJ bill at one point - what does that have to do with me? My CoJ account was paid in full and I am due a refund from them to. I would not recommend their services.