Little to no communication and super unorganized.

Little to no communication and super unorganized.
We bought my sons instrument and the band teacher wasn't even aware that it wasn't a school instrument.. how does that happen? Shouldn't they have a count of school items?
My son had a leave of absence from school and I tried multiple times to get emails and homework from teachers with no results. TWO MONTHS later someone reached out to me.
His special ed "teacher" didn't even know who he was when we went to parent teacher conference... he spends hours in her class room everyday and she had to ask who he was?! Seriously so disappointed in this school.