Is it appropriate to complain against Dissertation Supervisor?

Hi,

I have to submit my dissertation by 21st September and my supervisor has kind of neglected, ignored my emails and has given me unhelpful suggestions. I last spoke to him on 4th July and I mailed him twice between to reach him but he did not reply back. In the third email, I added my personal tutor as a CC and I got a reply the next day and a meeting was set up. My supervisor told me I should not have added him as a CC and all work regarding to data cleaning has been done wrong and cut down my approach of applying new methods.

I re-did everything and had a conversation with one of the Ph.D. students in the helpdesk session and he told me what I had done earlier was correct. I have got a re-sit in one of my modules and this unprofessional behavior is putting a lot of stress on me. I am at a stage where my self-confidence is extremely low.