(Please note it will be a number of months following receipt of your request before the RTB are in a position to commence the enforcement process. Priority is given to over-holding, illegal eviction and cases of serious anti-social behaviour; and even in such circumstances the process is lengthy and you may wish to consider taking your own proceedings. )
Thats taken from the the RTB dispute/section, I see it as more a Please Flip Off letter.
I also wouldn't be just looking for a reference from the previous LL if you were to slink off to another property, Id be looking for the one previous to the last LL. Your positives are though, that the RTB are involved. I can only hope, for what its worth, that the LL does pursue with his rent arrears, it may stop the likes of you from jumping tenancy's to avoid payment.
Its not a personal dig at you, as there are two sides, but your posts have the hall mark of, How can I screw the system and get away with it.