This number keeps calling my cell phone. I never answer as it is not a number I recognize. A man has left messages a few times, claiming it is urgent I call back, that it is an important business matter, yet he never explains further than that.

Its Mainstreet equitys collection office. Some type of litigation office.

LOL!  I guess we all know why they are calling you two!

If it's important and they leave messages, why not answer?  Telemarketers don't leave messages...