It is something SERIOUS. your compressor is not running and having a very hard time trying to start and is cutting out on it's internal overload. STOP using it that way or the compressor may burn out. May need a new dual capacitor and it also sounds like there may be damage inside it. I would get it checked by a Pro as the freon level needs checking when he gets it running. Also the outdoor coil needs cleaning and indoor coil needs checking etc.
"Cut it twice and it is still too short".