Business ProfileforGrandin Family Dentistry

The dental office is billing me for an appointment which they say I confirmed then missed. The truth is that I did confirm this appointment to see the dental office when they said that there would be a $25.00 fee if I cancelled. The office immediately called me back and said they were cancelling my appointment because I was sick and they didn't want to risk the health of their employees, but they were still going to charge me $25.00 (even though they cancelled the appointment and I was not contagious with a UTI). They were extremely rude. I returned the bill and told them I didn't feel I owed this bill as I was willing to come to the appointment and they cancelled on me. Also, they sent a letter telling me to find another dentist. Now they have turned my bill over to a collection agency and it is now $40.24. I am very upset. I am a 79 year old woman with an excellent credit rating which I don't want to jeopardize because of this outstanding bill which I refuse to pay because I feel it is totally unjustified. Please advise. I do not wish any ill will toward the doctor nor his staff, but I just want this bill to go away as it is unjust. Thank you.