Hiya and welcome to RIBnet
Are you aware that there is a section on here that you can introduce yourself just a little ? Perhaps tell us about your boat , where you like to cruise/race whatever or maybe a little about yourself ?
A first post like this will probably not get many folk on your side from the word go. Quite frankly you clearly state the equipment did not work from day 1 , but you simply did not do anything about it ! Honestly what did you expect the manufacturers to say ? IMHO you only have yourself to blame , sorry !