I'm having the same problems here. Deposited a week ago, got shorted on the bonus, emailed support who added the extra amount. Wagered over the required amount but could not cash out, so I emailed support a couple of times. No response. Chat function is gone, phone number is dead.
I tried cashing out smaller amounts, and it eventually let me cash out my deposit amount..of course the bonus disappeared at this point (yes it was a cashable bonus).I finished above my deposit and bonus amount.
I checked their sister casinos and all phone numbers are out of service except EnterCasino and Noble Poker. No answer at Noble and EnterCasino insisted they only did support for that casino and did not know anything about Monaco Gold. The CSR there did say they are still owned by Empire Online.
BTW, thanks for the research Vinyl, but I think the website you turned up is an older one because the 1-866-463-9279 phone number is disconnected and refers to the 1-866-335-8285 number currently on their website that is now dead too.
Time to
PAB? Any success MMPerrier?