(credit: Logitech) Logitech customers are not happy, as they recently found out that the company would be discontinuing service for its popular Harmony Link remote system. The device and its cloud-based system allow users to control home theater and sound equipment from a mobile app. Customers received an e-mail explaining that Logitech will "discontinue service and support" for the Harmony Link as of March 16, 2018, adding that Harmony Link devices "will no longer function after this date." While Logitech is offering a one-time, 35-percent discount on its Harmony Hub to affected customers that are out of warranty, that's not enough for Harmony Link users who are expressing their dissatisfaction on Logitech support forums and Reddit.