Called about 15-20 times in a row, thank God for a Spam blocker.

Call about 15-20 times in a row, thank God for spam blocker. Called them back while blocking my caller ID using *67 prefix and an automated answer machine picked up and asked if I was interested in solar panels. This is not the first time they've called. They generally call more than 15 times in a row. Can't imagine this company is legit. If it is they are very desperate. If they truly are legit they should not annoy the crap out of people.