I'm A Mistreated Workhorse

Hey..am I the only one who puts their heart and soul into what I do only to have some under qualified ass kisser get a promotion while I made all the effort? I have worked at Sunbelt Rentals for a while, and because I have never sucked up, have never been promoted. Other experienced employees have been passed up as new hires have moved on in spite of the fact they were less seasoned. I would think that working 55+ hours a week and giving it all I've got to build the customer base would help, but the fact that I helped make their business thrive obviously means nothing in a corporate run company. I do everything I can to please every customer and keep them faithful to our service, and all I get is fatigue. I'm fairly happy with my job in general, and I'm no whiner, but enough is enough...I invite anyone who wants to share their work experiences here to do so (please keep the language clean).