Find Phone number, Location Address and all other information of Western Union Agents in Karachi Residency Sb 26 Block 3a Branch Karachi on Branches.pk, Pakistan’s Largest Branches Directory. You can contact them directly on Phone number +92-21-34156914, or you can visit their location in person, address location is: Ground Floor Shop No S-5,s-6 P Residency Sb 26 Block 3a Karachi.