Hi- I am after some advice as I'm pretty clueless when it comes to swiss legalitise. I took out insurance with sanitas when I moved here two years ago. I have been paying all my bills. Groupmuteul kept sending me bills for insurance too, I ignored them thinking it was just a mistake. When they kept arriving I emailed them and wrote, showing them my sanitas certificate (they ignored it & continued sending me bills). Now they've finally wrote back saying they've stopped my account but they want back payment from last two years! I got a demand letter today for this payment from the canton. I am really stressed about it all and don't know what to do. Any help would be gratefully received.