My family got ISDN, a slight upgrade from dialup where you got two lines, so your mom could talk on the phone while you were waiting for websites to load about 14% faster.

Problem was, the extra line also had a phone number, and both numbers reached both lines. Our new number apparently used to be the fax line of some business downtown, and we'd get phone calls from fax machines several times a day. The other end was a robot, so yelling that we're not a fax did nothing.

We had to borrow a fax machine so we could receive the fax. It was an ad from Dell. Then we called the number on the ad and asked for our number to be deleted from their database. Thankfully they turned out to be the only vendor faxing that number.