Re: Ads appearing outside my targeted county
It's in the geo-targeting settings. Select "People in my targeted location" from "Location options (advanced)" to show your ad only in your targeted country.
The setting "People in, searching for, or viewing pages about my targeted location" will show your ad to people who are located in a different country but used geographical terms that are within your target area in the search query. Sometimes that's appropriate, sometimes it is not.
Best of Luck!