I'm getting spam calls all from the same area code. I get at least 500 calls per day (every minute or more) and each time, it is from a different phone number. Plus it is filling up my voicemail with static messages. Is there a way to block all calls from this area code? Blocking each number manually seems to be a waste of time since calls keep coming in from new phone numbers. There are no people on the calls and the messages are just static. This is my business mobile phone for many years and I cannot just change my number. I already have Verizon Call Filter App on highest setting and it is not helping much at all.