Psycho ex won’t leave me alone

I’ve had problems where my ex won’t leave leave me alone before, I have a new amazing boyfriend and my ex couldn’t handle it and made fake accounts of me and was messaging himself from them accounts, and then sent them to my current boyfriend.

But now he’s getting worse, he’s calling and texting me from unknown numbers, Christmas <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">Eve</a> a number called me 15 times at 4 o’clock in the morning saying “would you like to make a donation to make a wish foundation you whore” I hung up and ran into my parents room and he called again and said “don’t put the phone down on me you whore” they heard everything and I was shook up. I tried to go back to sleep but then I had these messages through

Then in the night Christmas <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">Eve</a> I had phone calls that said “im the ghost of Christmas past where’s your grandad Brian” which hit home for me because my grandad passed away 1 1/2 years ago.

We went to the police and they went and warned my ex if he did anything else I would press charges. He clearly didn’t listen because I had these through last Wednesday

Brian is my grandad who passed away 1 1/2 years ago whom I loved and miss very much, and Jess is my 12 year old sister.

I feel really lost and I don’t know what to do, we’ve gone back to the police, is there anything else I can do?