Please help

Please, I need your help. I wouldn't normally do this and I understand if you can't help but I'm sinking fast.

A few months ago the DWP contacted me saying I had been overpaid in benefits/welfare. I did not know of this as at the time many things were happening and somethings were not explained to me that I couldn't be on certain benefits at the time. 

I received a letter in the post today and it says I owe over £5,590. Simply because I knew nothing! 

Please, I'm a small youtuber, I draw t-shirt designs, and I draw commissions to make barely enough to eat and pay rent and bills. Please I need your help.

If you want something in return for the money you may donate, as I said I'm a youtuber and I draw commissions. If there is anything you would like me to do, I'll do anything.

Please and thank you