Buy Squash Balls I Just Bought An Expensive Ping Pong Ball, But It Got Squashed A Little? What Can I Do?

I just bought an expensive ping pong ball, but it got squashed a little? What can i do? - buy squash balls

I bought an expensive tennis and cool. While I, I accidentally crushed a little. I asked my friends and told to put warm water. What can I do, PLEASE HELP!