4 light bulbs + led all broke at the same time. What are the chances?

What are the chances of having 4 rear light bulbs break all at the same time and the 3rd brake LED light not working.

Last Thursday, someone was driving behind me and told me that only one of my brake light is working. I said "impossible, if that's the case I would know because the dash would notify me of any blown tail lights" So I got out of the car, asked someone to step on the brake and sure enough, only one light was on. Rear right.

So I took it to the dealer and the lousy valet said that "oh you just need light bulbs". I said, well yeah but I've changed them before and it keeps breaking. I wouldn't drive 25 miles just for light bulbs that I can buy for $4.00 from napa.

Anyways, they wouldn't believe me and since I didn't have an appointment, they weren't too willing to take me in. Eventually they logged me in and the service advisor had such a bad attitude. I said that if it's simply my light bulbs, I wouldn't be here. Especially when the 3rd brake light isn't on.

I was wondering if anyone had this problem before and could it have to do with the lcm? This problem happened out of the blue.