I can imagine it definitely hurts I'm sorry that happened to you, especially on your first call, it must have taken a lot of courage and trust to call them up. I feel bad sometimes even when customer service just hangs up.
I would agree with @locked*n*loaded thaf it really wasn't personal. These people are woefully under trained, they probably pressed the wrong button by mistake.
Also please don't take what they say to you personally either when u do get through. Again these people are just people, they are not professionals, they are woefully under trained, they are only really allowed a bit of time to talk to you about your feelings and try to direct you in the right direction to get help because they are so woefully undertrained. These are just people, some of them are studying psychology, some and someone close to them ctb, they don't really know what to say most of the time but I think they do really want to help otherwise they wouldn't do a volunteer job like that, so I think they will do their best to listen to you, but there's a variety of quality unfortunately some are better than others. So if they something triggering and hurt you don't take it personally.
I probably wouldn't give them a earful for hanging up, maybe just let them know it happened and reflect it up the management chain, because the new person you get wouldn't be the person that hung up on you.