Hello first time poster, at my wits end. I’ve no hot water from kitchen mixer tap and no water from both hot and cold bath taps and upstairs sink taps. The toilet was also not flushing. I tried occluding the kitchen tap method which got the toilet working again at least. I’ve tried the old vacuum on the bathroom taps trick with no luck. Could some kind soul explain what is going on and how I can go about fixing it please. Thanks!