Received 1099k form in mail for transactions I did not make.

I received this 1099k form in the mail yesterday allegedly from CashApp. The form had my full name, address, and last 4 digits of my social security number.

The form indicates I had 998 payment transactions in September 2024 in the amount of $34,508.30. I've never used CashApp before and have no clue how these transactions could have been made.

After verifying that the support website provided was legit, I called the support number for CashApp.

Was my information stolen or is this form fake? If so, any advice on who to reach out to?