I switched from Lebara Prepaid to Telekom Prepaid. However, I do not receive incoming calls from outside the Telekom network, e.g. from Vodafone, O2, 1&1, etc. But outgoing calls to all networks, sending/receiving SMS from all networks and data services work fine. I contacted Telekom support by phone, chat and in the shop, but no one was able to solve the problem. Can someone help me here?