Blocking a phone number from calling you should be fairly simple in 2013, but it still isn’t. Android doesn’t have a completely integrated blocking solution, and carriers don’t generally offer this basic service for free.

Luckily, there are a variety of ways to block calls anyway, whether you’re dealing with telemarketers that won’t stop calling or other annoying people that just won’t leave you alone.

via How-To Geek http://www.howtogeek.com/171012/how-to-block-a-phone-number-from-calling-your-android-phone/