Name, I'm a police officer. Definitely phone the police back. I would imagine your force has a specialist domestic abuse unit, see if there is anyone you can speak to from there.
If your husband does need to come home to collect clothes etc, then you can actually ask the police to be present during this if you are concerned about your safety, or even just to prevent what is called a breach of the peace. This may not be done that quickly - obviously the police are busy and this isn't going to be top of their priorities, but a local officer should be able to assist. Do not get talked into allowing your husband to come alone. The other possibility is does he have a friend, or even a neutral party you would trust to collect some items, if you bagged them up first and handed them over on the doorstep?
Keep your doors locked and either a chain on, or a key in the lock so he can't come in when you're home.
Keep all texts, voicemails etc. If he won't leave you alone you could go down the harassment route, and they will be needed as evidence. Ignore his calls. I know you have already sent one message, but perhaps send one more reiterating that you don't want any contact with him, that any contact can me made through your solicitor, and that if he persists in contacting you then you will contact the police. Hopefully that will shut him up pretty quickly.
If you feel unsafe for any reason, don't be afraid to ring the police. It is better to get everything logged.