SUBWAY®Restaurants

So I get these $6 Subway footlong coupons in the mail often. I went to this Subway tonight 12/18/15 and got a pastrami sandwich. When I went to checkout, the gentleman there told me "This coupon does not apply to pastrami!" I don't know the guy's name and I do not to be mean in any way. But just in case the franchise owner wants to know which one I am talking about, it is the Hispanic fat gentleman. I asked him where in the fine print does it exclude pastrami and of course, there was nothing there. I used this coupon for pastrami sandwiches many times previously in many Subway locations, including the SAME one before and never got this attitude. I told the guy, thanks, I will never come to this subway again and he just handed me my receipt! Awesome customer service!!!