I recently had a minor scare with my ISP after they started to send me the invoices of another customer with the same name and surname. My guess is some employ

I recently had a minor scare with my ISP after they started to send me the invoices of another customer with the same name and surname. My guess is some employee or system had looked the other guy up using insufficient data to uniquely identify him (something like name and surname) and my record had popped up first. This employee or system assumed they did not have to dig any deeper. Fortunately, I quickly had it fixed, and my issues were limited to receiving someone elses invoice, which included a lot of personal data. After I told one of my technical friends, he was surprised that there is another guy with the same name and surname. In fact, there are dozens of people with the same name and surname, and one of them is a local celebrity.