Casino stalling, common practice?

casino stalling what can I do when a casino gave me a QR code to deposit to, I used it, I sent the LTC - I rec an email notifying me transaction complete - checked the hash code and Blockchair matched the QR wallet address - coz I wanted to see what I was charged for the transfer - but the casino refuse to acknowledge they received it - it’s been over a week now - what can I do?