how to find my HSN card number

My HSN account was closed but I am still making payments on it. I am trying to create an account on the Synchrony page but they require my HSN card number but I no longer have the card, its either lost or misplaced. In calling HSN they referred me to Synchrony which then requires me to register a Synchrony account; therefore I’ve come full circle and accomplished nothing. The Synchrony page says the card number is on the statement My oldest statement is 7/2015 but I don’t see it anywhere on it. Wonder where I can find that number. Today is Sunday so maybe a weekday will have more people who can help? frustrating…