I got that number ringing two to three times a week. The caller does not leave any message. I tried to answer once but there was nobody at the other end. On the top, I do not expect any delivery...
ID is "Delivery Notice" - they have called five times in three days. We have blocked them as we are not expecting any package or service and they do not leave a voice mail message.
After ignoring their calls for weeks, I finally answered to find out what they were trying to sell. Caller ID says Delivery Notice. They say "Have you received our package containing blah, blah, blah"? If not, we would like to send". At this point I stop them, say I am not interested and hang up.