Ok, I'll start with, your salesperson is an ASS! I Googled around and one suggestion is, if you have used your account to email anyone, ask them what your username is and you can go from there.
You also might try, using the recovery process and try your Sprint email address as the recovery address. Your Sprint email address is typically [email protected]
. You can find this by going to Menu, Setting, About Phone, Phone Identity.
Perhaps Google can help you if you contact them here:
Good luck, that happened to me when I switched from the Instinct to the Hero. The salesperson never said anything about my contacts. When I got home they weren't on the phone and when I went to Sprints website they were gone. Android phones are incompatible with Sprints online backup feature. Fortunately, I found an old backup file that I had saved!