Student finance help!!!!!!!!

I have applied for student finance, they have given me the lowest maintenance amount even though I am entitled to the highest due to my household situation. I am a single mother of 4 children my eldest is 18 years old. I am on benefits too so I am a low income household. They needed more evidence which I sent on the 28th of sep to get this rectified. However they keep on giving me dates when this evidence will be looked at and the date comes and goes, I call in and they tell me if its not done by another date to call in and they will escalate it I call in on the date to escalate then they give me a new date saying that they have pushed the date back due to being busy. This keeps on happening and I am left in hardship because they are busy. What shall I do?

Hi there, What evidence did you send on the 28th of September? Currently we are advising to allow 6 to 8 weeks for evidence to be processed due to being in our peak processing period. Thanks, Angela.

I sent my marriage declaration status with my seperation document and proof of benefit