But... my license plate number is different from my registration!!!!!!!!

I was so happy to get my license plate this early especially I bought my car right before Thanksgiving. I was impressed with DMV's efficiency... However, I had this chill when I opened up the envelope; I noticed on the front of the envelope:

Remove certificate from this pocket. Check the number on the certificate with the plate. If they do not match, contact the department of motor vehicles.

I was like... OK... I can't be that bad luck... Saw my plate, xxxxxxx, and saw my registration, xxxxxxy. Huh? the last number on my license plate is different from my registration by one!!!! They must have inserted into the wrong envelope. OMG!!! WHY ME??? WHY NOW? WHY ON THIS CAR????

I am waiting for my plate number to apply for the HOV sticker, and this totally upset me. I am so worried that the additional 10,000 stickers is gonna be used up because everyone's gonna get a hybrid during this holiday shopping season!!!

Has this happend to anyone? What's the procedure like to correct this? I researched on google but couldn't find any related information. I am calling DMV tomorrow for more information. Hopefully my calls can go through DMV