@sonofrio It takes several days before you get a response from either the on-line form, or a phone call. But if you prefer to call, the number is (507) 538-3270.
The way it works, in either case, is that basic information is taken, then routed to the most appropriate department. Someone from that department will call you for an in-depth phone interview, and explain the next steps and probable timeline to you (this varies from one department to another based on staffing.)