We just don't want to 'support' our customers but THRILL them. There are many ways in which you can contact us with questions. We are here to help you!
Phone: 1-800-238-0011

Fax: 1-401-619-0172

Email: sales@osms.biz

Postal: 47 Taylor Road, Portsmouth, RI 02871

Chat: Click the button below to live chat with an online customer service representative (9-5 EST, Monday - Friday)
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One Stop Merchant Services is a registered ISO and TPS of Visa and MasterCard through US Bank National Association, Minneapolis, MN using the Nova Information Systems platform.