Well done for making the call, even if you did hang up. That was so brave.
Can you rehearse what you want to say perhaps?
How about something like this:
I need help. My husband is sexually abusing me and I don't know what to do.
OP, this is serious and you're not exaggerating. You're not being silly, you're not imagining things and they're not going to chastise you for wasting their time.
He has committed very serious offences against you and he will continue to do so.
I would open the email you sent to WA and have that in front of you when you make the call so you know what to say. Just read that and don't think about the person on the other end.
Tell them you don't know what to say, that you're frightened, that you don't like talking on the phone, that you need help. They're people OP, just like you and they're there to help. They are taking calls every day (unfortunately) and they are used to people being frightened and not knowing what to say.
You're going to be ok.