What do I have to do to reach customer service? I've been trying for weeks - no chance. Does anyone have more knowledge? I've already been to Migros Bank, they can't help - but I was informed that I wasn't the first to be unable to reach customer service. The app (if it works) doesn't offer the function I need. And the eBill login doesn't work because Viseca works with other credit card numbers. The thing was so highly praised...