The same thing happened to me. The check cleared the bank. I became suspicious of it so didn't follow through on buying the MoneyPak cards. I reported the fraud to my bank. Now, whoever it is at this number keeps texting me to "finish my assignment".
What you need to follow through is at the Bank. That check IS going to bounce. Make sure the bank is aware of that. Glad you didn't get scammed. The use of a cash wire transfer service (MoneyPak) is a very clear indication of a scam. NEVER to be used for ANY reason other than to send money to family or friends.