Ace Hardware review: Royal paint

I moved to Okemah, OK in October of last year. Even though I had a car I chose to buy all my paint from Ace Ie buy local. In the past I have bought 6 gallons of paints at $30+ a can of all different colors. I bought a pastel blue to cover thick, black dark marker and one gallon painted a very large room. For my birthday my aunt sent money to buy a gallon of paint to paint a 10 x 15 room that has two doors and three large windows. When I went to ace I again told them the cheapest the worker told me that was royal, it was late I had to go to work and the stupid place closes at 2 on Saturday. I trusted the employee. When I got home I realized it was not the same brand of the other 6 gallons I purchased, the wall I'm to cover is dark but when I started to paint I realized the paint was worthless, not only was it going to take 4 coats, I would need over three gallons of paint. I went back, showed the pictures the manager who said it was my fault I should have used a primer then offered to sell me another gallon. I left totally mad and upset they wouldn't work with me. I now have no car so I will no longer buy paint there because of the last of customer care, I I am unable to work and I refuse to buy from them again.