I've been in retail/customer service for around 10+ years for big box and smaller companies (management and other roles). All I can say is
#1 these guys are hurting their business big time
#2 they are going to start losing business
#3 I personally think they need to learn how to prioritize
Granted, you can't do everything people say on forum/survey, the least you could do is acknowledge your customers and at least let them know you are working on it or have plans for something.
When i've had irate customers we didn't do anything and everything they wanted but we did ACKNOWLEDGE them, letting them know we do understand and letting them know that we will resolve the problem(s).
The customer is no longer in the dark and is willing to work with you.