They will be incredibly frustrated because you are letting him get away with it. They will have seen this many, many times before - and now they also know that they will see this many, many times again in your case alone.
This is only the start of the assaults which will require you to call the Police. Now that the Police have been called and he's 'got away with it', he will know he can ramp up the violence and you won't make a statement.
I have been there, and in the end I made a statement, and kept on making statements, because a couple of Police stayed with me for over an hour and persuaded me of the truth of what they were saying - that if I didn't make a statement, they would be carrying me out in a box one day. At that point, they were going to prosecute him anyway because of the evidence of their own eyes when they arrived. Luckily for me they also had photographs taken by my boss when I'd gone to work after beatings.
Even if you make a statement, things may not go further on this occasion. But if you are going to choose to stay, you need this statement as part of the evidence for if he is prosecuted in the future.
But please leave. You are not financially trapped, you are 'choosing to stay for financial reasons'. Keep phrasing it that way, however harsh it sounds, because that then opens up the choose to NOT stay for financial reasons.
Please go back to where you have support. He has deliberately isolated you and made you dependent on him - it's what they all do. This is no longer love - it is trauma bonding and addiction.
Another weird thing about DV is that you don't understand how much in danger you were until you are out. It's because of dissociation. If he were a stranger who had done this to you, you would prosecute. Why is it different when it is someone who is supposed to love you? This is evidence he doesn't love you, he only wants to control you.
Please break that control while you still can.
This relationship WILL end one day, because you will either prosecute him/leave him because of the violence, or he will leave you for someone else (like I say, it's all about the control and he may decide at his leisure that he fancies controlling someone else who is more of a challenge once he has broken you), or he will kill you. If you end it now, you end it on your terms, not his. Believe me, the effect on your self-esteem is worth ending it on your terms, however difficult it feels now.
Moving back to where you have support will also take away his ability to stalk you.