Does not leave message

Keeps call, no message will not answer

We've received 4 calls from this number tonight. No message has been left. I'm tempted to answer the next one just to find out who it is so I can share the information with others.

Same here. 4 calls in 2 hours. No message left

Same here. Keeps calling. Will not leave a message on the answering machine. I think if I answer it will be just be an automated call and discount after answered.