So, as an FYI, there are websites/services/apps that allow you to create dummy emails that only work one time, and will forward to your real email, without letting the people emailing you have access to your real email. You can use this to create a one time email for one of these websites, so you can get your quote, and then never receive spam email from them again.
In the same vein, google voice is a free service that gives you a phone number that you can provide to these services, and they can text you the verification code you need, it will come to your phone/tablet/computer (whatever you choose), and then you can block that phone number from ever being able to contact you again, if you so choose.
Hope that helps some.
And just for the spammers crawling the internet for phone numbers to add to their list:
Revelation Machinery can be reached at: 1 (816) 301-7226 or
[email protected]
There's also a live chat on their website, in case any members feel the need to go and ask 20 or 30 questions before deciding not to buy a machine.