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Frank Wittenberg is an experienced professional with a strong background in sales and customer service management. Currently serving as Teammanager Verkoop Binnendienst at Van Happen Containers since 2016, Frank oversees sales operations and order entry. Previous roles include Teammanager positions at Carglass® and coöperatie DELA, as well as a focus on quality monitoring at Univé-VGZ-IZA-Trias. Frank's career also includes account management at notable companies such as KPN Telecom and Lumidee Headset Company, along with experience in sales support and marketing. Educational qualifications include a degree in Marketing Management from Avans University of Applied Sciences and multiple certifications in financial services and coaching, underscoring Frank's commitment to professional development.