blocking international nuisance calls

[dtb]

need help knowing if i can block international calls by using the country code?

I keep repeatedly getting numerous calls daily from +232 which is Sierra Leone and it's becoming a nuisance.

using Samsung J3

thanks

[MI5 · Accepted solution]

@dtb 

All you can do is block the numbers individually asfter they call.

Some help dealing with spam calls here https://www.o2.co.uk/help/safety-and-security/unwanted-calls-and-messages

[dtb]

thank you