a c a recovery inc collecting for instant cash

anyone here have dealt with these people.They are trying to collect for instant cash meanwhile i have never taken a loan with them this guy who does not leave his name called me last week left me a message saying i must call him by 5 pm or it will go to legal action 8 days later today same guy calls and says the same exact thing that i have till 5 pm or legal action will take place next day and also at the end this moron says a warrant for my arrest will be issue what a joke this guy is i have already sent them a debt validation letter i was just wondering if any here dealt with them