If you want to contact the Mobile de Germany customer service because you have a problem related to a purchase or something similar you can always do it to the 030 81097-601. They will be there to answer your questions from Monday to Friday. Their working hours are from 08:00 am to 06:00 pm. Please also call them if you are suspecting a fraud from an ad, dial the +49 30 81097-90 working every day from 08:00 am to 08:00 pm hours. Remember that you can always get all the information from their customer service page, or contact them through their contact form with your email and question with all the details that you can provide.