What on earth is going on with people not getting their mail?

For the past 3 months I am having an ongoing problem with not getting mail delivered. Very important mail may I add. It started with a birthday card that a relative sent and I never got it. 2 weeks later, it was returned to sender and it had the CORRECT ADDRESS! (MINE) Now the situation has become a nightmare and I am missing my professional state license which I NEED asap in order to continue to work at my job. I paid and called the state for a renewal in October and they confirmed it today that I should have received it a while back. Wth? so where is it?! I am freaking out because I can't be out of work because I didn't get my mail! So I complained to the postmaster and spoke with the carrier today but they use so many different subs ( mailmen ) that it would be difficult to know who is messing up. I did some research and have found ( astonished ) that this is going on all over the place and alot of people are having trouble receiving their mail. The state won't even put a rush on my license now ( like this is my fault ) so I might be without for another 2 weeks up to a month! Try to explain that to your boss.|||Contact the Postal Inspectors and the people you are expecting mail from. There are shortages of personnel because of cut backs, it's probably just sitting there waiting to be delivered.|||I get my mail...and in a timely fashion. The only variable is the time. Anywhere from 11:30am to around 2:00pm. But I'm not complaining, things happen on a mail route. I get excellent service.