Am I the Assisstant yet?

So, at my job I do pretty much everything. I make orders for our vendors, check in orders, Receive orders, Make the schedule, Work all shifts, Get new vendors, Take care of issues, and then do normal employee duties. Oh wait, I forgot to mention, I also pick up the slack for when my Manager drops the ball. But I am just a regular employee. The company I work for doesn't even notice every thing I do for it. Like this week for instance, My manager had to go to alabama to do some crap. He didn't decide to do it until the day before. So I get the call sunday afternoon that I have to be at work bright and early on my day off, Because he has shit to do in another state. Being the nice guy that I am, I go along and do it. Well, we are in halloween, and I work for a Costume and magic shop. It is insane this time of year. So monday wasn't horrible, Since I do the scheduling, I had it pretty much covered since nothing serious happend. Today was a different story though. Normally Tuesday - Thursday I work a closing shift to help out with the night help. Since my manager is gone and I am his stand it, I had to open and couldn't close. Which means, I was there by myself with the owner from 8 am until our closer came in at 4 pm. Since I opened I was supposed to be out at 5 pm. Well I don't mind working overtime. Except for when the company yells at me for it. But I stayed until about 6:30 pm. But with all this extra, what do I get? Nothing. Nothing at all. Every thing I have done will go un-noticed. It's a sad world working in a toy store.