When booking a stay for a holiday weekend the cost only showed the extra holiday fee ($2 /night).so the customer thought it was costing her $6 for three days. Why id this happen. my fees are clearly stated and no one else had this problem?

When listing your holiday prices, you should list the total cost rather than the additional charge. For example: if your normal stay is $25, you would list your holiday fee as $27. Because you listed only the additional fee, and not the actual cost, that's how rover will charge the owners when the stay is booked. I would suggest changing your listing to what you will be charging per night on the holidays.

As for the vet visit, I would speak with the owner and discuss reimbursement with them. If they choose not to (which, if the vet visit was not cause by something you did while the dog was in your care, I can't see why they wouldn't) I would suggest calling the Rover Customer Service. They will be able to better answer any questions you have regarding that, and be able to assist you with that process.