Problem solved thanks to EthicsPoint
You can also find them as Navex, NavexGlobal, NavexOne or EthicsPoint - so I wrote the same feedback for a couple of companies.
I was directed to them to file a complaint after the company couldn’t resolve the payment issue directly. The operator asked for all the details and submitted the claim. After a month or so, the company decided to resolve the issue in my favor. I’m grateful to Navex for representing me and helping me with the problem.

