I have a 4-year-old boy, who loves to draw on the wall from time to time. He does it with his Washable Markers, which should be easy to clean with water. He left his marks for a while on the wall until we forgot about them.

Recently, we repainted our kitchen. The contractor painted the primer and paint over the mark. It looked OK at first. However, when the paint dried, the marks showed through. What should I do with minimal effort to remove these marks? 

[![enter image description here](https://i.stack.imgur.com/Tqjks.jpg)](https://i.stack.imgur.com/Tqjks.jpg)

[![enter image description here](https://i.stack.imgur.com/OtO7M.jpg)](https://i.stack.imgur.com/OtO7M.jpg)

Updated: The paint that the contractor uses in this project is Valspar Signature Semi-Gloss Latex Interior Paint and Primer in One (Actual Net Contents: 124-fl oz)