My First Easter Blue Embroidered Romper customer reviews

It states on the description 6-9 months and it's not. I jst to it and it's way too tight. My son is average U.S. 6 mo. Old and it's way too tight on him and he literally just turned 6 months this week. I'm very disappointed and I called customer service..they said they can't do anything about it because it's been personalized. I ordered $150 worth of merchandise and they didn't care. This is the first time I ordered and it's going to be the last.