Sassafras — Sassafras/ Refund not received

I recently returned a product to sassafras, they were very prompt in replying back to my mails until the product reached them, after that they have not given me any instructions on when or how to I get my money back . They haven't even replied to my mails, I've sent a number of them . It has almost been more than 10 days since the product reached them and I haven't been refunded yet .