How do i contact post office customer service? e-mail us: [email protected] Call us: (800) 522-9085 Or write to us: PostalOne! Customer Care Center USPS-NCSC 225 N. Humphreys Blvd Ste 501 Memphis, TN 38188-1001How to contact positiveposlaju customer service? PosLaju Contact Number: +603-2273-3927. Toll-Free: 1300-300-300. The customer service department operates on Monday to Friday from 08.30 AM to 08.00 PM. Saturday 08.30 AM to 05.00 PM. Sunday services of customer care are not available.How do i contact a retail pro international? A Retail Pro International representative will respond to your inquiry. Please enter your name. Please enter your email. Please enter a phone number where we can reach you. Please enter your company's name. Please enter your city. Yes, Retail Pro may process and use the data I provided above in accordance with Retail Pro Privacy Policy.How do i contact technical support at the post office? Technical Support. The Technical Support team can help when a website application or form doesn't work properly. If you have trouble using one of the following, please give us a call. Click-N-Ship ® File a Claim; PO Boxes; The Postal Store ® USPS accounts; 1-800-344-7779. Hours of Operation Monday – Friday 8 AM – 8:30 PM ET Saturday 8 AM – 6 PM ET