Cost of Attendance

Real quick and simple question... Has anyone ever had an issue with cost of attendance being too low compared to your budget you are making?

I am pulling my hair out with these financial aid people telling them to disburse the full dollar amount of the loan I applied for and was awarded and they are refusing saying that "I don't need that much and I can survive on the $X they are giving me for the year" which is like 60% of what I live on now and I am relocating to a bigger more expensive city.. I tried making a full line item budget based on actual expenses and they still fighting me saying "oh well"

Lets just say this after my FIXED monthly expenses they expect me to live on approximately $700 a month for food, gas, utilities, etc.