Your help needed for treatment of stray dog with critical condition

I have been feeding and rescuing street dogs for 5-6 yrs now. This street dog is around 8-10 months old and stay in Vikaspuri locality of West Delhi. He was beaten by some drunk people around 2 weeks ago. It managed to survive the brutal attack but got seriously injured. I took him to the nearby veterinary clinic right away. He is being treated for last 8-10 days but his injury has not been healed till date. The infection has spread out in large area of his body and pus has accumulated in left foreleg and as well as considerable part of neck. Since expense has been growing day by day so I need your help to take care of his treatment and continue my rescue work.
Thanking you for your help.