Stop robocalls

This number keeps ringing me i had two missed calls from it when rang with my mam it answered and all I got was forwarding to service then nothing. Me and mam looked at each other confused because we were like what service. 3 hours later a got another missed call and today I had a missed call it. I barely use my phone to call anyone. Everytime I look it up all it tells me is it’s a Dublin number but doesn’t tell me who owns the number which makes me too nervous and anxious to answer because I d