What is the name of your state (only U.S. law)? NY . hello i seem to be having a problem with some companies that will not do business with me. unfortunately there is noone else that sells what they have. is there any way to force them to do business with me? they will also not issue any warranty on any parts unless they install them. one of the companies said they will not offer the training class they have available to me because i am what they call a third party repair company. how can they keep me from learning their equipment and not sell me parts that are not available anywhere else? is this legal?