PI5#Y DIESEL LEAK!

As most of you know my Fabia suffered from a diesel leak and this still continues. I haven't used the car except to go to my 'repairers' place and back. Its been in this state since about christmas when my undertray smashed up and the leak started. Now the situation im in is I have a flat battery where the diesel leaked onto my alternator belt and corroded it causing it to snap therefore not charging the battery. I have bought a new filter (where the leak appears from) with new 'O' rings and fitted it all... The leak continues. Could it be the 'T' piece that connects to the filter as its defently not the other two hoses. Either way im going to have to order one of them and replace it and hope for the best... TBH i've just about had enough. I've got money waiting to be spent on mufflerectomy and a map and a SeatSport FMIC waiting to be fitted along with a EGR delete pipe. I am also waiting for my car to work so I can get the bloody paint on the arches repaired along with a small scuff on the mirror and colour coding the grille. If anybody has experienced the poxy diesel leak please tell me how you fixed it. ANY advice appreciated.