When no-one else would help me, I helped myself: read a lot, researched a lot, asked people who knew more than I did. It does feel like, if the pro's can't be bothered, then why should I care....? But there are people out there who can teach carb counting. Ask your doc for a referral when you see one another. A fixed dose isn't working for you, and your insulin regime needs to start fitting your life, which it doesn't right now. Guesstimates can be lethal.
Please hang in there and keep asking questions. Here, and with the medical professionals. And if you have a hard time getting a word in edgewise, write down your questions, maybe e-mail them ahead of time to boot. Can you e-mail the person who goes over your readings and doesn't do anything useful? So you can maybe get help before the three months are up again? Because if you ask them for carb counting lessons, they should be able to refer you. Mentioning diabetic burn out might also help... Because it does sound like you're just about done with all this. Which is completely understandable under the circumstances.
Hugs,
Jo
PS: High blood sugars also affect mood... They can make depression very, very much worse. So that's a reason to strive for better control, and to fight for help to get it. You might feel mentally better, as well.