Pretty sure it's a scam. I've got the same call from the same guy from this number as well as 713-234-1451 and someone claiming to be from the same company from 443-205-4607. They claim to be calling from a firm called "Midway Resolution Services". I haven't answered any of their calls but they've left several voicemails and it sounds like it's one of those scams where they try to get you to pay some imaginary debt but they're really just stealing money from you. I also googled them and no legitimate company showed up. Don't give them any personal information, especially not financial info or your social security number.

I got the same call for a couple of weeks with threats and also the 443 number. I have already gave them my information and card info. What can I do about it?

I JUST GOT THIS SAME CALL YESTERDAY AND TODAY AND THEY FAXED OVER A AUTHORIZATION FORM FOR COOPER FINANCIAL TO WITHDRAW 695.95 FROM MY ACCOUNT. I SPOKE TO MY LEGAL REPRESENTATION AND THEY ADVISED NOT TO SIGN AND I DID NOT. I SPOKE TO LAWERE4NCE BURKMAN FROM MIDWAY MEDIATION SERVICES AND HE STATED THAT THEY WERE COLLECTING ON A PAYDAY LOAN FROM UNITED CASH LOANS FROM FEBRUARY 13 2013 IN WHICH I HAVE NEVER HEARD OF UNITED CASH LOAN AND ALSO WENT BACK TO MY BANK STATEMENTS ON THAT DAY AND THERE WAS NO DESPOSIT OF FUNDS TO MY CHECKING ACCOUNT THAT DAY. SO YES I DO THINK THAT THIS IS A SCAM. PHONE NUMBERS WERE FROM 443-205-4607 AND 760-266-5096

Yes it is a scam.  The company calling itself Midway Mediation or Resolution has a long history of scamming on 800notes.com

File a complaint:  https://www.ftccomplaintassistant.gov

Received first call on 9-8-14 to residence, call from mediations place . States that I was being served in needed to be present on 9-11-14 between the hours of 11am to 4pm and if I wasn't home they would go to my employer and have supervisor or mgr be witness for papers being served. At the end of call the male stated " you have been notified Ana". They also provided info to my family members to why I was being served.  Already broke the FDCPA law.
2nd call. Received a call from a blocked number male again,  states this messg is for Ana and you are being served on dates 9-11-14 need to have to type of id's.  If not present at home we will then go to your employer and serve you there. Where your supervisor is to be present and witness.  Then they said I had till this afternoon to contact 760 266 5096 speak to micheal mahoney at x108. Midway financial LLC.  
These people not only broke the fair debt collection law but also provide my personal matter to family.  I have hired an attorney for this matter we will be taking this matter to court and Sue ace cash as well. Please seek attorney if you have gained contact with these pple. Even if it's your debt in you owe, they still have no right to harras you nor say they will press charges against you.