The US system is so outdated and inefficient. My latest experience: 1> Change mailing address. Went on using the USPS website and it always showed my credit card info incorrect, though all info entered was correct. Called USPS and was told the web is the only way to go.
2> Get a new card. Someone was using my credit card, so I'd get a new one. Days later I got a "new" card, which was same as the old one. It didn't work. Then in the next 3 weeks a new card hadn't arrived, after hours of phone calls. People don't care, nor work.