Zero Turn Mowers

why was i told by a dealer that all mowers had a warrenty even if you use a residential mower commercially you would still have 90 day warrenty/i was told for such a small area less than 1/4 acre and the fact that i own the building that a commercial machine was a waste of money yet it broke after the 1st 10 minutes of use because of design flaw and husq.says i used residential mach as commercial ,well i own the place and its ONLY ONLY ONLY 10 MINUTES OLD all the *** dealers in CT tell me its a design flaw and thats why no one sells the 42 in residential model and that they are not welders or fabricators so they can not work on it and buy another one WOW GREAT IDEA i just spent 3000 and it worked 10 minutes let me get 10 more so i can cut my lawn 1 time,well the arms hit the deck bar when you close them to drive and then deck pops out of grove falls to ground and drags and bends under machine AND AGAIN DEALER TOLD ME TO BUY THIS because i did not need a commerical machine