Aaa, I'm sorry you feel so lonely and abandoned by your T. Fwiw, my T replies in the same way. Mast: "I feel completely wretched and lonely and am not sure how to carry on." T: "See you on Tuesday." (To be honest he has replied with more empathy and compassion a couple of times, but on the other hand he usually doesn't respond at all.)
Maybe try to see it as a message conveying some kind of hope and consistency? You were struggling last night, but you will have a chance to be heard and understood when you see your T again?