Spike vet bill

Unfortunately last year I was out of work so I had to cancel Spikes insurance, I started working again but forgot to take it back out, now he has been put on a drip in hospital over night as the vets thing he isn't eating or drinking because he has internal bleeding inside his stomach, the vet bill is going to between 600 to 1000 pound which I can't afford to pay on my own at Christmas time