Poor service delivery -Cash purchase.

I purchased a head board and bed with base set where the salesman was brilliant. I have returned the headboard due to poor manufactures quality. I requested a refund within 7 days after purchase. I called several times and was promised by the manager that he will contact the payments department for my request for refund. I sent all requested documents , bank statements having made over 12 calls and payment has still not been refunded. The worst store to purchase is Matress factory. Poor customer service from the admin department. Still no call to date regarding payment. This is well over 3 months .