I hate people who just keep phoning the same person over, and over, and over again. If you are reading this, (which isn't really possible), F**k you.
Between 1st and 22th of this month, they called me 8 times. Later, they ended up on my blacklist, 3 more calls blocked since. It started all during the middle of summer. It's even more annoying than spam SMS messages.
NOTE:"null" is the T-Mobile "pending payment" bot, it sends messages everytime I get a missed call or a payment is required.