I'm not saying don't discuss it in this forum. Go ahead and discuss it all you like and you will get help from others users, but if you want to tell Apple specifically, then send them feedback specifically.
No, I'm not saying anything about anybody being right or wrong and yes, Apple maps are a bit of a disaster, which is why I used the shortcut clip to go back to Google maps on my phone.
All I am trying to say is that if you purchase an iPhone 5 in the US, then you need to be careful because unlocked iPhone 5's in the US don't exist at the moment so won't work in Russia. Full price and contract free does not mean unlocked, so perhaps there is a chance that you have indeed been misled and mis sold the phone by either a Sprint or Apple employee.
If you had wanted a truly unlocked iPhone 5, then perhaps the UK would have been a better choice, as all UK iPhone 5's from the Apple store will be sold fully unlocked and without a contract.