Tell me how to block spam calls

pu1. There are a lot of spam calls starting with 070. If it starts with 070... I want to block everything

2017-12-13

OK

pu2. If you use a cell phone, there's a blocking program. You can use hoo-hoo or hoo-scol

2017-12-13

OK

pu3. If it's spam when I'm using Fuscall, I get a call saying spam. I guess the spam phone company used their brains, and they called each other and registered with a good number in advance so that they can get a call because it's not spam. Hussell hasn't updated it yet, so we don't know when this spam will be caught

2017-12-13

OK