MT in North York

we are in the process of having the fence build. the men didnt mark the property line. said they were going to follow the property line by using the old post, but clearly they didnt. they put the posts 6 inches inside my property and refuse to take accountability. the sad thing is that they used the first post for their line so all 10 posts are wrong. i called office, no answer, mail box full. some one sent me a text from office number, when i asked for them to please call me, no one did. unless they correct the post error, im not going through with the completion of the fence. extremely polite men, but very rude and refuse to listen. pics clearly show the displacement of new posts. old posts were 4x4, new 6x6, but you can clearly see that the middle of the new post isnt in the right location. the electrical box was screwed into our old fence, now its its on the other side of the post