According to the answer you gave that somehow their system doesn‘t update your residence address although you even have the correct tm30 slip from immigration (if I inderstood you correctly) this means you will have to continue showing up in person, unfortunately. A lot of my fellow expats experienced this as well. TiT
Du meinst wohl Festnetz zB Behörden etc. Ich nutze von meinem AIS Abo einfach die spezielle Vorwahl 003 für internat. Anrufe, sehr günstiger Minutentarif