I am so anxious that i cant sleep, i cant stop thinking that maybe i have to change my phone number or maybe i have to do something more serious.

He called me multiple times and texted me over 20 times, pressuring me into meeting him so 'he can explain everything'. Saying multiple times 'where can i pick u up so we can go have dinner and chat'. I dont want to go to detail why we broke up but the break up was bad. Everything was bad. The relationship was BAD.  Ive blocked him everywhere now but i think he will buy another prepaid. 

(Btw he has contacted me like this SO many times.)

Even his now gf messaged me last year on facebook (just saw it, i dont use facebook). Ive messaged her now, telling her to say to my ex to stop contacting me.

Im loosing it at this point. Im so scared, anxious and tired but i cant sleep. My thoughts are racing and i honestly want to die.