I rehomed a cat from a lady for free, I wasn't getting anywhere with some adoption sites and I wanted an older cat like him.
Was told he had a clean bill of health, had him for about a week, took him to the vets and found out he had several health issues. Because they were pre existing I could not insure him for them and I would have to pay out a lot of money that I could not afford.
I spoke to the lady and let her know. She seemed mortified and kept apologising, I asked her if she was eligible for PDSA vet treatment as she'd said she claimed benefits, she was and offered to have him back and ensure he was taken to the vets.
So I'm glad he got the treatment but I blame myself for not using a charity. It's just a matter of luck I guess, had I been able to insure for his illness I'd have certainly been able to keep him.
A situation happened recently which could've been solved with simple communication. It was something I was supposed to do but I wasn't aware of. It wasn't mentioned at all by the people asking me to do it, nor was it mentioned in the paperwork I signed. In the end I found out the hard way when I breached the term and they found out, even though I hadn't been aware it was an issue. However if I'd had the common sense to ask in the first place, this wouldn't have happened.
I just feel a bit down in general and beat myself up a lot. I know the above situations are not only my fault, but I contributed to them.