<human>: I've been at my job for a year and half. When I was hired on, the main selling point I the job was advancement opportunities. its actually right there in our SOP(standard operating procedures) manual. And told that people get promoted first before hiring outside the company. I work my ass off, run the whole warehouse by myself. I've completely revamped the entire poorly-laid out warehouse, enacted new processes to make things run smoother and have made the warehouse 100 times more efficient than it was before.  

In the year and half I've been there, two advancement opportunities have come up. I've formally applied to both through HR, though it was completely unnecessary to, as they normally just promote you. I wanted to show initiative and my drive to advance and show how much more I can do for the company. Well. For the second time, I am being passed over and they are hiring externally  to fill the position. I have inquired a few times as to why I am being passed over. Not even simply "we think you're doing great in the current position and want to see what else you can accomplish here" not bullshit excuses, nothing. I'd like to know if there is anything I need to improve upon to get a promotion. Or anything to improve upon in general. 

When I started, our company was on a reputation rebuild from prior employees whose give-a-fucks were broken. We had lost a lot of customers and were in the process of trying to gain a customer base again. Through my bfs industry (electrical) I've broadened our customer base to an industry we had never dealt with before. I have brought in more than 30 new accounts and countless new cash customers. I work in the warehouse, but my sales are equivalent to the order-takers on the desk. I think I have more than proved my worth to this company and it feels like they couldn't care less. On a daily operations standpoint I don't even get a simple "good job" or anything. Myself nor my work has been recognized for any amount of improvement I've made in this place. And too boot, I make less than the part time teenagers at McDonalds.

Can you summarize the given text in a few sentences?
<bot>: I bust my ass for a company that doesn't seem to actually care how much thier employees do for them. Been passed over for promotions with no explanation.