Paderborn, Germany, 2015-6-1 — /EPR Retail News/ — Wincor Nixdorf has received a three-year contract from Bancolombia for the operation of its 1,160 self-service systems. The bank also ordered 800 ProCash 280 automated teller machines. In addition to installation and maintenance, the service contract covers the complete management of the bank's self-service device park. Wincor Nixdorf will assume…