So like i kinda messed up my Student Finance...

mine got proper messed up I got into my insurrance uni instead of firm, but sfc assessed my application using my firm's details even though I've told them that i will not be attending Queen Mary at the beginning of September I even gave them the details about insurance uni's course details over the phone in the beginning of September, but it seems that they did not get round to updating my application and now I'm left with no money the overdraft is near its limit

My advice is to get in touch with either your SU or the finance department of your university (if they deal with budgeting issues). They should be able to provide you with financial management ideas along with helping you with your application. Some universities (I don't know if all do) also do crisis loans so look into that as well.