I seem to have no tanked water in the house this afternoon. Got cold kitchen water, but no hot downstairs or hot and cold upstairs. Next door adjoining us has got normal supply, but next door not adjoining is the same as us. Water board says not their problem call a plumber...I can't afford a plumber, so does anyone know what may be causing this and what I can do about it myself rather than go without water or call a plumber I cannot pay? please.