Register the product at https://service.sap.com and then you can logon to Service Portal to open a ticket to report product bug or for your technical questions. Technical support about the phone is not available on phone, you first need to log a ticket.
You can find number to reach Customer Interaction Center CIC at various Countries here:
If you call CIC they can help you register the product or open a ticket with technical support for help on product. Explore forums or https://www.sdn.sap.com as your issue might have been already answered.
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