Watch what sales person says

After buying over $5000.00 worth of furniture from Cardi's I asked about their promotion of receiving the $500.00 coupon that they had advertised. I was told by the sales women that I would receive the coupon in the mail in a couple of Weeks. After waiting a couple of weeks and had not received anything in the mail I called the store in South Attleboro were I had purchased the furniture. I was then told it would be 60 to 90 days before I would receive the letter. There were additional pieces of furniture I wanted to purchase with this coupon. I went back to the store in person and talked to a manager. He said nothing could be done and I would have to wait for the letter in the mail. I paid cash for the furniture and did not have it on a payment plan or financing program. The additional furniture I wanted to buy was on sale and the pieces would have matched what I had bought. By the time the coupon comes those pieces will probably be not on sale and I will have to pay full price. Be careful what sales people say.