Hi Woollymammal,
He has no right to harass you in this way, if you are in your own home you have a right to feel safe. Perpetrators use any type of contact to worm their way back into our lives, there needs to be completely no contact for your safety.
If you need support with moving, your local domestic abuse service can help you to approach the council. Additionally, you could look into the option of an injunction so he is not allowed to contact you. The National Centre for Domestic Violence can advise you on whether you would be eligible for this. You can call them on 0800 970 2070.
Take care and keep posting
Best Wishes,
Lisa