New telephone number and longer opening hours

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New telephone number and longer opening hours

2/7/2022: 

GD has a new telephone number. You can now reach us on: +31 (0)88 20 25 575. You can call customer service on working days from as early as 07:30 to 17:00. If you have any further questions, please do not hesitate to contact us. We're here for you!

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