hi,lads,skimmed a ceiling on friday,which had been studed & boarded by the clients mate. i got a txt this morning from the chap telling me the whole ceiling had come down,just as his wife walked out of the room at 4am as she was getting ready for work. he said all the screws are still in the stud work. i told him,besides doing a bad job,he's also,clearly over penertrated the boards. he's super pissed off with his mate & kept over stating it could of killed my wifeX1000000000. he's already paid my for the job. do i just charge him again?