Q.What plant is this
We have a plant that looks like it’s some kind of daisy. It’s growing like a weed. Last year when we had flower bed installed, the landscaper put in three plants. Now we have lots of them. The plant produces a single white flower that looks like a daisy. What plant is this and how can I control its growth?

You do most likely have Shasta Daisy growing.
Here is a link with more information.
https://www.gardeningknowhow.com/ornamental/flowers/shasta-daisy/planting-shasta-daisies.htm