It's not uncommon for people running a party to kick someone without having the decency of speaking to them first (I've seen this occur too many times both in FFXI and FFXIV). When I've questioned it, the general type of reply I've received is that it "would be awkward" to speak to someone, so it's easier to just "kick them" as they "would figure it out". Needless to say, I don't tend to join a party being led by that person again.

I'm sorry to hear you had a bad time. Not all parties are like this (although it does sound like whatever happened to your client probably made the issue worse), so perhaps try again in a little while when you feel up to it.