The FDCPA covers debts which have been reduced to a judgment. You're entitled to the same fair treatment from collectors before and after the creditor wins that lawsuit. If you think you have violations, I'd guess you have another few months to take action.
Even a terrorist group can buy an 'A' grade from the BBB, as a prank group proved a few years back. What MCA needs is more private lawsuits from its victims to convince its masters that their lawbreaking is not tolerated.
Discussing the debt with you, the non-debtor, violates that person's privacy. (... or her memory in this case) Oddly enough, many rude collectors will violate every other part of the FDCPA but are deadly afraid to attract a lawsuit for third party disclosure.
My advice for "not me" cases is found here:
http://800notes.com/forum/ta-34af6a034ba34b6/unending-collection-calls
Calls twice daily. No-one is on the line when I answer it and no message is left when voice mail gets it. This is an annoyance and a waste of my resources.
It sounds like a scam to me. They are trying too hard to "bully" you into sending money. A legitimate company would give you the info and their lawyers info. I wouldn't worry about it