My washing machine waste pipe flows back into the cupboard. This is in a 1 bed flat in a fairly new block. The waste for the washing machine is connected, I think, to the kitchen sink waste - which drains away fine.
A plumber has told me that there is no blockage within my property; the people who run the building tell me that there is no blockage in the communal plumbing. Also my plumber has disappeared! Currently I put the waste pipe in the kitchen sink when the machine is running.
If anyone has any ideas about this I'd be grateful.