The worst part of this is how much you like WP. Once you enjoy an OS, others will only remind you of what you had. I have had BlackBerry, WebOS, and now WP. I was okay with BlackBerry, but do not miss it. I love WP. But to this very day, I am reminded of what I miss about WebOS, and how much I enjoyed the way that phone worked. I get the feeling if you go Android, you will be fine, but you will miss things about WP. My wife had to move from WP to Android for business reasons. This has been a little over a month, and I am starting to hear "I miss....." quite often.
I urge you to write Mr. Elop as well. You are out nothing but the time it takes to type out an email. There is nothing wrong with Android. But, it isn't WP. And for those of us who love the OS, why settle? You live with these devices all day. It is worth the try.
Also, I see nothing wrong with how you handled this. Not sure why some people are suggesting you are not taking responsibility when it is obvious you are. You were promised a service from your local Nokia repair center, and they failed. Nothing wrong with being upset when they did not live up to what they promised in exchange for payment.
Nothing else, we will blame it on the rain. (Dated reference, bad pun alert.)