Chanel single flap bag

I purchased this online from a consignment store for a client. The consignment store falsely reported condition and then refused to take it back. I just want some of my money back. In average condition. Corners are slightly frayed. Interior has been well loved. I believe this purse is pre 1983 (I’ve attached the Entrupy certificate- and as it’s over $1000 poshmark will also authenticate). Please ask questions.