So I guess we should never sell or buy on eBay (a multi-billion dollar company) because they don't list a phone number either. If you have a problem with eBay, you are lucky to get an email response within 3-5 days.
I'd agree with you if an etailer demanded cash or check, but when I pay with a credit card I am fully protected in case of fraud or any delivery problems whatsoever.
I bought from RRDeals.com and they reponded via email within 1 hour!!! Better yet, they shipped same day and as I said before, I am a happy buyer and love the MX500.
I am new to this forum and if RRDeals had start up or delivery problems in the beginning, they sure corrected it and are a great company to deal with now.