The reason why your calls don't go through is that they have a very high end phone system. It recoginzes your phone number and routes you to bogus voice mail system.
Call from different phones and you'll at least get through.
United Law Group ripped me off. I signed up with them almost a year ago and they kept promising me that they would do a loan mod for me and nothing.
My lender never heard from them and now my house is in foreclosure.
