I wanted to close a Dutch bank account. I paid about £6.00 for an overseas "signed for" postage. I kept phoning but in the end the letter was returned to me. I discovered via tracking that the Dutch "postie" had gone to the bank before they opened and left a "collect at the post office" note. The bank did not collect it so the letter was eventually returned to sender. In the end a normal airmail was safer than the signed for one.!
iPhone 7 review: a range of small updates add up to an excellent phone