Key #1: Let customers talk! (Ask open-ended survey questions)   Companies know that customer feedback matters.  There are more cost-effective (sometimes even free!) services than ever to solicit that feedback. However, too many businesses struggle to turn this feedback into action. In other words, they collect valuable data — then do nothing with it. At Thematic, we interview dozens of companies each month who collect feedback from their customers — both those who succeed and those…