Your machinery dealer should have an established website of their own and have a physical office that you van call on a fixed phone, not just a mobile. When you are considering purchasing from a dealer, always check their website and call the office number on the site to make sure it is answered in a business-like fashion. If the number you call is a house phone or if the number is a mobile number you should take extra steps to ensure the person you are dealing with is legitimate. The company name and address should also flag up on Google with a physical location map, make sure to call the number on Google as well and ask to speak to the person who you are dealing with. In a properly established company, there should be multiple persons manning the office and your queries should be answered swiftly and courteously.