Last night I had a problem when I asked for a pick-3 number I played on hunch, $1 straight four times and a $1 box one time. The clerk handed me four 50 cent str/box tickets and when I explained four $1 straight on four separate tickets, he handed me a $6 super straight ticket. On the third try, the light bulb came on and he handed me exactly what I wanted. The problem could be a language barrier or simply the clerk was new and inexperienced with the lottery terminal. Sometimes experienced clerks will have a brain freeze and just can't get it right.
"5 min later I go back in and now try to give him the $4 worth of winning scratch tickets."
Why didn't you give him the $4 in winning scratch-offs the first time and simply put the four quarters on the counter and ask for a $5 to use in the vending machine?
Based on the entire story, it looks like that clerk is very skeptical about your behavior in that store and maybe the best advice is to go to another store.