How complicated is this sin?

Let's say a middle cl family decides to donate to a hospital for cancer patients. The donation system states that the higher donate will have his/her name in bold, gold, letters first on top of the other donates on a large flat statue in the middle of the hospitals main entrance. The middle cl couple donated more money than the others yet their name was mistakenly last. And someone else who donated less actually got their name first. Is it a sin to ask the person in charge of the plank to change the name because the middle cl family donated more or should the middle cl family stay quite about it, and move on because the principle matter is for the sick kids, and it does not matter who's name is first, why or why not ?