CST Co. has been the approved collection agency for PIDA since 1973. They are a full-service commercial collection agency with over 90 years' experience in the personal handling of accounts in the US and worldwide. CST Co. is licensed and bonded in all US states where a commercial collection agency license or bond is required. PIDA members can take advantage of programs and services offered by CST Co, many of which are at low or no cost. For more information, call 800-626-5873.