Block calls from a specific country

I am being spam called by +44 numbers four weeks now. They call at least 20 times per day. I started blocking all numbers that call me from +44 but they keep changing the last digits of the numbers and no matter how many I block, I am still called at least 10 times a day. I can not block enough. At the moment I think I already blocked about 20 numbers starting with +44 7441 90x xxx (the xxxx is changing).

it gets me crazy!!!

please let me know how do I block a whole country code, as I am in the Netherlands and I do not have anyone who should call me from the UK. Nor I have my number to anyone or anything from there as far as I know. Also I did answer twice, but when I answer no response and after a while they or it hags up. I don’t know what to do anymore.

please help