Set up a trust or a separate management company that cannot be easily sued (only one client: your other business). If for some reason Irish tax law doesn't work for this case, you can probably set up a foreign owned management company or quality assurance company. Another option is to buy business insurance for lawsuits, though really do you research and record the call you have with the rep because he will promise you things that are not true. If you don't have one party consent for phone calls in Ireland do it from a country that does.