most of there calls are pretty good. what is wrong with them.do they not work,if both are as you say no good. maybe it not the call,not saying its you.most times if you have both bad then something else is wrong.some you have to move the thing around and tune them. I have one for my wife and it works good.
carry them back to wal-mart and they will refund you money, even if you didn't get them there.just a though.

hope it all works out,and good luck this season.