discovery short term used back yard plumbers but charge you for professionals

mr Discovery how do you take good money from honest pensioners and get back yard plumbers to do your contracting work How it it possible that we have to phone 3 times with no luck 1st call past the bug to discovery emergency 2nd call sipho takes the complain and leaves it there 3rd call this lady decided I can hang on for more than 15 minutes whilst she is doing ???????? How is it possible that your plumber according to your emergency call out guys can say they put a cheap poor product in ? put NO isolator switch put NO bonding strips putNO non return valve in and issue no COC certificate ? WHO ??????? gets what out of this please advicer in the meantime we pay you on the dot but we have no hot water I believe your so called plumbers because they cant be professionals is something like plumb crew or into that effect