I received a call from this number saying they are the DEA

Oh My God, I did too.  Is this a scam?

I called the number back a few days later, and a male voice answered, saying "DEA, may I help you?"

These people are for real, They came in to my home and arrested my wife, for purchasing medications and smuggling from over seas, 2 federal agents came in and took my wife to jail. Now i have to pay for a federal lawyer to bail out my wife.

YOU ARE A LYING SCAMMER SHILL AND THIS IS A SCAM. Scammers pretend to be law enforcement (police, sheriff, Feds, AG's Office, fake cop agencies with made-up names) to extort your personal info (ID theft) or fines for fictitious crimes.
The real DEA warns about fake-DEA extortion scams here http://www.justice.gov/dea/pubs/states/newsrel/2010/denver111010.html 
Report to the Internet Crime Complaint Center http://www.ic3.gov/complaint/default.aspx , the Federal Communications Commission http://esupport.fcc.gov/complaints.htm , the Federal Trade Commission https://www.ftccomplaintassistant.gov/ and your state AG, as appropriate.