Help my humans fix me

Hi, my name is Leo. My humans call me Leo the lion?? I don't think they know that I'm a dog, silly humans, lol. So i'm 7 months old, and I was born with a heart problem called pulmonary steosis, which wasn't picked up until my second injections at that place called the vets??? So this is where my sad story starts, my humans didn't get insurance in time silly humans but they haven't given up on me. My mummy said what ever it take so the human at this vet place said I'm going to need a scan which led me to being referred to Southern Counties veterinary specialists in Ringwood where I had to have another scan and now I've got to have a operation at the cost of £7000 now my humans had £6000 but the 1st scan took £400 took of that and the 2nd scan and consultation fees was £962 now that leave them and me in a bit of a problem my humans haven't got the rest of the money to help me get better so I'm asking for £2000 to help them to help me to have this operation I've got to have is a balloon valetisey and a stent to give me a fighting chance of a life

thank you for taking the time to read my message

Leo the puppy x