Oh my, what a horrible thing to have happened!! I would be so upset with the clinic that treated him. Whether or not you are low income or whatever, you deserve the same treatment as any other person with pets!! A vet is a vet, and they should know that they are treating all God's creatures. Shame on them, for putting you and Jack through this.

I'll be praying for Jack and for you to pull through this. Big hugs.... we are all here if you need a shoulder!