Go to amazon.com and use their live chat customer service. Im positive they will give you the $20. I have used that chat service 10+ times and they always make it right...every single time. Either by refunding me money, giving me free overnight shipping, giving me amazon gift cards, etc. It has never once failed me. And I believe the bowlerstore orders are fulfilled by amazon so they tend to be more willing to help. If it is sold and shipped by a 3rd party, they are less flexible at times, but I have never once ended a chat and not gotten what I needed. It's like they always say, "the squeaky wheel gets the grease".