How do i contact a one step retail customer? Already a One Step Retail client? Getting help is as easy as dialing 1 (800) 266-4915 or sending us an email at [email protected] Access One Step’s Self Service Client Portal where you can create support tickets, track your ticket, research past ticket history, view an open project, and more.Why partner with one step? As a fast-paced retail business that is continually growing, having a partner like One Step has been a lifesaver. They are always available to answer a question, take a call, and most importantly be on-site when launching a new store. We implemented a Mobile Cloud POS throughout our US & UK store portfolio, a big undertaking for any business.What is access one steps self service client portal? Access One Step’s Self Service Client Portal where you can create support tickets, track your ticket, research past ticket history, view an open project, and more. Choose from a variety of flexible support options to meet every need or budget. All plans include certified, US-based Product Support Specialists.