Cash App Cash App refused to honor the terms or their contract- keeping money from a senior on social security and a disabled grandson Ca

I sent money via cash app to my disabled grandson - he had changed accounts within cash app and he can’t retrieve the money. The contract language within Cashapp states if the money is not claimed within 15 days it reverts back to the sender.

It’s been over 45 days and they haven’t returned the unclaimed money. I’m a senior on social security and can’t afford to loose the money. I got some money to the grandson another way but I need the money that is just sitting "dead” in that dormant account Cashapp.com.