Pathetic customer service and support.

Once again I’m gobsmacked by the ineptitude of the finance department. In my previous review of the same company I related a litany of bungles (don’t want to use swear words) made by them. Since then after they conducted an audit and came up with a totally different conclusion which I again disputed based on the same facts as I had used before they then came back and said they were going to do a recon (on their own audit??) and I would receive the result on 2023/09/11 , well it’s now 2023/09:14 and I’ve received nada. Emailed the same person to query and was told I’d get the results by 12.00 . Guess what, all I got from them till now 13.30 is NADA. What does one do now????