dealing with difficult people

You made my dog sick! He got sick right after eating the food you recommended to me!
I'm sorry to hear that, would you like to come into the clinic now? We have an opening.
Yes. Here is my dog, get the vet out here now
Hi! Are you Avery? Thanks so much for coming in.
Ever since I started giving him the food that you gave me he has been throwing up constantly! What kind of vet are you!
Hi! What seems to be the problem with Bethel?
I'm so sorry to hear that, I understand that it might be stressful as a pet owner to see this. We will do a quick exam to see what is wrong, it won't take long.
Well that's still a lot of money but I guess I don't have a choice.
With the physical exam we believe Bethel might have consumed a foreign object. We will have to do an X-ray, which I am only going to charge you $80 for considering the circumstances. Is that okay?
We have discovered a piece of fabric inside Bethel's abdomen that will require treatment.
What? Are you sure it's not the food?
I'm sure, this is something that is very common. If you would like to discuss treatment options I can also offer you some compensation for the cost.
Well, I want to help her feel better. We can do what you recommend. Thank you for all of your help and I'm sorry for getting angry earlier, I was just worried.
It's understandable for you to be upset and concerned for your pet, our main priority is to help them feel better and keep our clients happy, we appreciate your concerns regardless!