I get calls from this number at least once a week. They leave a message telling me that they are calling from Google App and that this is in reference to my business listing. When I picked up today and spoke with someone, he was very rude and when I pointed out that I didn't like his tone, he told me to "go @&%$ myself" and hung up. I immediately called Google Apps and they CONFIRMED that this is not them. Save this number in your phones and do not pick up.
They call me several times per week and leave no message. They never respond when I actually answer the call. I have blocked this and about five other versions of this number with the last digit changed and it never seems to help.
They call my house weekly with the same pre-recorded message regarding claiming "your local business Google plus ID". I consistently opt to have my number removed but the calls continue. Today, as some have mentioned, I chose option 1 to speak to a person. I asked why they continue to call me despite opting out and being on do not call and all the guy said was that he would try to have my number removed from the list. I called the number back but it was disconnected and no longer in service. When filing the FTC complaint, they warn that little can be done without the business name (which is fake in this case, it isn't really Google calling) and a legitimate (i.e. working) phone number. The next best thing is to block the number.