Wix.com's poor service

Over 2 months ago, Wix.com "upgraded" their mobile app designed for hotel bookings and pretty much the app and website have stopped functioning properly since then. Despite the fact that this is a paid service, the stock response received over the last 2 to 3 months from the Wix support team has been that they are aware of the problem but have no idea when it will be fixed. It also seems from the tone of their responses that they don't actually care whether they retain customers or not, or that they are inconveniencing paying customers in any way