Help save my puppy!

Help save my puppy. Took to one vet where the words actually were " his heart is going to explode at any minute" the cost of operation over 5000. Which can't afford!!! I was rushed to make a decision op or put down. So I said I would take him elsewhere. Took him straight back to vet yesterday who said neither of those things!!! He said its urgent but that won't happen. So he is referring us to Royal veterinary hospital potters bar. Still so expensive but I can't give up on the little guy. So he is being referred as Emergancy. Needs to be done ASAP and no possibility of payment plan. We are scanning him ASAP for heart diagnoses at we will know exactly what and if it can be done. At this stage I'm asking anyone who can possibly help with a small donation even £5 we would highly appreciate the help!! Just wanted to thank everyone who has commented and tried to help. X