AT&T DSL Equipment Rebate Scam

I signed up for AT&T DSL service in mid 2007 and mailed in the $50.00 equipment rebate form and they claimed they never got it. That seams odd as all other mail I send out always gets to get to the intended recipient. I wished that there were a consumer advocate looking out for people being victimized by these kinds of tactics of not making good on rebates.