Deutsche Telekom = 0151 42227878 Best get in touch with DT via their WhatsApp chat. This has the highest probability that some englisch speaking agent will take over. You def. need your customer number and the last 6 digits of your IBAN. M-Net = 0800 990 6090 Here you can open tickets and sort
Starting from May 15th 2019 the EU law states a standardized calling / roaming rate of maximum 23 cent/min for mobile phone calls made within the EU. Meaning that from now on it does no longer matter where you are in the EU and where you have made your contract, CALLING FROM ONE EU COUNTRY