Help with salary issue

I started a new job three months ago working as a carpenter for a national Home Improvement company. I was hired as a full time employee at a rate of $25 hr plus time and a half for overtime. According to the agrement The first week of work they only pay a training rate of $18, then they're supposed to pay the regular salary. They pay every two weeks. Well, I get my first check and they paid me $18 for both weeks. I brought it up to my manager, he said he'd take care of it and the difference would be in my next check.
Two weeks later I get my next check, not only is there no adjustment, they're still paying me $18. This time I bring it up to the HR girl, my manager, and his manager. They re-confirm my rate of $25 hr and tell me they will take care of it. They have re-confirmed my rate of $25 hr several times over the three months.
Long story short, it's been three months they haven't corrected my pay. They owe my over $3000 in back pay, they are still paying me $18 and no one can give me an answer as to when my pay issue will be resolved. Not only that, two days last week they told me they had no jobs scheduled, so I had to go two days without pay.
It seems to me they have breached their contract to pay my the salary I agreed upon, as well as not providing me with a forty hour work week.
What are my options?
Thanks

[judg4]

Based on what you say here, you could file suit against them (or at least threaten to do so) in small claims court or in regular court; filing in small claims court is easier and requires no attorney...you could try to collect all of the costs and damages that you suffered due to their behavior... You may also report them to your state attorney general's office.

You could also consult your nearest Department of Labor office to briefly discuss the issue with them ---you may also want to ask the company to put what is happening in writing and explain to them that you may have attorneys review the situation