“No one who works here at CapitalOne would ever tip this much so we just wanted to double-check you were of sound mind when you did this! :)”
“No one who works here at CapitalOne would ever tip this much so we just wanted to double-check you were of sound mind when you did this! :)”
Tip cash.
If there is no mechanism to convey cash, the request for a tip is likely questionable.