Sorry for the long post

This is the issue: I am a produce clerk, and our produce manager doesn't do anything. He texts all day, talks on the phone, and hits on every single woman he sees. This is how it always has been with him, ever since he came to the store. Everyone in the store knows how he is, he doesn't do work, the assistant manager, who is a college student, pretty much runs the department. The only thing the actual department manager does is mess around and make the schedule. Now, the other day, he loaded up four cases of bananas on a cart, took them to the sales floor and stood around and texted and talked to people for 45 minutes(me and the assistant manager timed him) and still hadn't touched a case of the bananas. He walks back into the produce room, and bitched me out for having a short conversation with the assistant manager while i was loading up a cart of product. (he still hadn't worked the bananas he's been standing by for 45 minutes). I had finally had it and went to talk to the store manager. Keep in mind everyone else in the produce department has already talked to the store manager about him. I tell the store manager about how he is always on his phone, doesn't do work, and about the specific incident the other day. ALL the store manager did was go to our department manager and tell him exactly what I said. He then proceeded to bitch me out for talking 'crap' about him to the store manager and act like a little girl and not talk to me.....

What should i do about this? Obviously nothing will be done at the store, I have already tried this. Why would the store manager tell him only what i said and not the rest of the produce clerks, even the assistant produce manager? The store manager likes me, and has no issue with me .