Need Advice

Did 48 hours two weeks ago during drivering day being 12 hours straight. I passed to become a driver! Only thing is I have NOT received a paycheck yet...I've went thru the chain and I keep getting the same answer the my check is coming the next business day etc. Haven't even heard anything after passing on when I should expect to go on the road so I've been back in my warehouse position until further notice but I have confirmed I have passed. Contacted union rep today but he says he doesn't know my h about the payroll process when it's this way...I've been with the company 11+ years . Not sure what to do...don't want to go to hard and ultimately piss someone and don't get to drive. I've been waiting on this forever....smh I need advice guys.