This is a bill collector, 'Dynamic Recovery Solutions' they work for Comcast. Tried to imply they were a process server for the Sherrif's office.

Rude, vulgar collections company calling from 305-224-1439. Homestead FL. They have wrong number but want MY information.I asked him to take my number off his list. Told me he couldn't check their phone list to take my number off their list. Needed my name. I said if I am not on your collections list what good will that do. Of course they can check the number... just looking to see if you are a deadbeat they can try to get money from. Refuses to give his name.
These people are violating laws but nothing is done. Dynamic Recovery Collections. Beware

rude collections agent in miami, fl. they say they "have papers for you to sign". they are just trying to scam money, they wont even tell you what company they represent or what debt they are supposedly looking to collect.