This comment was posted yesterday to this (very old) thread:

It would be nice to have received at least one royalties statements in the last 9 years. Additionally, I’ve never received a royalties check, although their records indicate I have royalties due me. Any attempt to contact them has been ignored. One must presume that they receive so many complaints they do not release their phone number. The only way to get a local phone number is to contact the Better Business Bureau and that number they do not answer. Meanwhile, no allowances have been made to leave a message.

I have been with Mundania since 2008/2007. I first contacted them about a U.S. reprints of a trilogy originally printed the U.K. At the time, the contracts covered not only the fantasy trilogy, but one additional horror novel. Books 1 & 2 of the trilogy were released. The third book in the series never was; neither was the one stand-alone novel published. I contacted them again in 2014 to try and get the rights back on all books since the third in the trilogy and the singleton were never released. They apologized profusely and said they would re-release the first two in the series, and those that had never been released. The first two appeared in 2015.

They have never released book three and the one horror novel. Their editing is abysmal. The editor deleted 29 pages of one book and then said the books (all reprints of books successfully released previous) needed to be rewritten. I pointed out that the books were contracted as reprints and reprints required no revision unless a typographical or spelling had escaped the Pocket Books editions. Since then they have stonewalled me. E-mails go unanswered.

I personally believe a class action lawsuit should be brought against them. I contacted them because I support small press, but what I have received is equivalent to “restraint of trade.” I cannot sell these books elsewhere. No reader will buy books 1&2 of a trilogy if book three will never appear. Book three of the trilogy is so rare that it has been selling for hundreds – thousands of dollars (pounds), but my hands are tied.

Please note that I cannot vouch for what Jessica says there, but both Absolute Write and Piers Anthony (you gotta scroll down a fair bit), have been reporting on issues with this press for years.