Foot Smart Company doesn't refund or exchange for severely defective products Norcross Georgia

Purchased a pair of gripper socks/slippers from Foot Smart For $18.99  After 4 wearings I washed them. They disintegrated in the washer, leaving large holes where the grippers were.  

I called led the company and requested an exchange.  The curt operator offered a 10% discount on the defective product.  I declined and asked for a refund.  She said no.   

This is company doesn't stand behind their products at all.  Better not to buy from them.  

They sell socks for comfort and diabetic feet, etc.  very poor customer service.