Btec assignment recorded as "not submitted"

Can someone please help me understand the marking system of Business Btec level3 assignments. I handed in an assignment that included Pass, Merit and Distinction. The tutor said Pass and Merit were not achieved and Distinction was "not submitted - no clear attempt".
My work clearly stated "Distinction" on page 7, which continued to page 12.
I resubmitted the Pass, Merit and Distinction. The tutor then said I had achieved Pass and Merit, but distinction was still not submitted.
I asked for my work to be marked and to be given feedback, especially as I have special needs and need to know what I have done wrong.
Unfortunately the Tutor is refusing to do this. She said I can do a resubmission, but would get no help.
She stated, "A student may think he has attempted it but if a tutor deems this as not a strong enough attempt, which in this case is true, then there is no further feedback can be given other than what was originally delivered in class"
I would be very grateful if someone could confirm this is correct or is the tutor supposed to mark my work?