hi, I had a T for awhile that did things like this regularly - the first few books i purchased and we did actually begin them but after the first session he would decide it wouldn't work and suggest another book to try instead; or he would do as yours did and state that it was for me to work on by myself after specifically saying initially it was for us to go through together - all that to say; I understand how confusing, hurtful and annoying it can be it's possible he may have forgotten what he said initially rather than be lying about it; I know it hurts though especially when you were buying a book you couldn't easily afford

I hope that now you have the book, you will look at it and will try asking your p-doc again about working through it. If he thinks it might help you (and you went to all that effort of buying it) it could still be worth going through the material even with the mess he made of this - whether with him if it works out, or on your own

saying that last part because - I admit the first time it happened I never wanted to touch the book again and didn't for ages; because I felt too hurt by the excitement and hope of working on it together and the rejection it felt like when he said it was for me to work on alone .. actually about two pages of the book were semi helpful when I did get around to it and the rest ... was pretty much rubbish ... I hope your book ends up being a much better experience!