Conversation Between local-looney and Martin Moyles

Hi Shane can you help me !! I drive a T5R yellow saloon last week my brake pedal started to slowly depress to the floor under pressure and if I release the pressure off the pedal it came firm again. I decided to change the master cylinder bench blead it refitted it then tried to bleed the 4 clippers , one of the 4 bleed nipples snapped of leaving in the base off the nipple this only allowed me to bleed 3 . The problem is still there I think the brakes are worse now . If I pump the peddle I get a firm peddle but then travels quickly to the floor again with no brakes at all , with a hard push down wards to try and stop the abs kicks in . Also it's worth mentioning that there is a whooshing sound from peddle as I push down hard on the brake peddle .
Without taking it into a garage I just don't know that to do , can you recommend any advise. Many thanks