I sympathize with you. I really do. I know my veins are deep, and thus, hard to find. Really.
But knowing that failed blood draws can leave painful bruising should have at least led you to NOT put a very adhesive, cheapie band-aid (that meant it was virtually impossible to bend my arm, thus making me want to take it off and replace at the first opportunity) with Super Glue adhesive.
Cotton ball and tape. Good things.
Things that don't hurt like a mother-you-know-what-er to pull off.