Help me to escape my abusive ex

I'm a mother of two young children. Last year december I decided to end my marriage to my (then) abusive husband. The gaslighting, the manipulation, the constant attack on my self esteem and the verbal and physical aggression that I had experienced whilst I was married was too much for me to bear. I silently endured it all until I was in labour giving birth to my second child. I was in so much pain but I saw a light at the end of the tunnel. I got in contact with a domestic abuse hotline and they managed to remove my ex from the home. It didn't end there. He insisted that he wanted to see his children but this was just an excuse to continue his abuse. I allowed him to see his children but he would end up focusing on me the entire time. The last straw was when he put his hands on me after I refused to engage with him in endless argumentation. I got the police involved, they gave him a warning. He showed up to my house almost every single day. He started going through my mailbox and started stealing my letters and holding them ransom (he still had a copy of the key and refused to hand it over). He would call me from different numbers. He would send me endless text messages. First declarations of love and then threats that he would quickly delete. His most recent threat is that he would pour acid on me if I don't let him see the children and if I carry on ignoring him. 

The situation has gotten out of hand. I have signed a co-parenting agreement with him on the advice of my social worker who said if I don't he has every right to take me to court. I naively believed her. Today my ex attacked me. I'm in shock and I think it's no longer safe for me to continue living here. I need to move to guarantee my safety and that of my children. My original plan was just wait and save money but this is urgent. I really can't stay here anymore. That's why I'm raising funds to be able to move to another city far away from my ex where he'll never be able to find me. This is really my last resort and I wouldn't be doing this if I thought there was another way but I've tried so hard to just get my life on track. The only thing this man is capable of is making my life a living hell. Please help a sister out may Allah reward you immensely.