Dealing with unpleasant people

Today I had the most unpleasant exchange with a condescending worker insurance representative on the phone. He stated "everybody" including specialists and general practitioners accept a fixed $85 for answering treating doctor's questionnaire and why should I be different. When I told him I would rather not send in my answers because I think my time was worth more than $85, I was told I " would rather put my patient through the stress of seeing an independent doctor ", and I had "disregard for my patient". I said to him he should not lay the guilt trip on me because I am trying to do my job. I told him he gave me an opinion which was uncalled for and I hung up on him. He was one of those who talked non-stop without taking a breath to let you say anything. 
From past experience complaining to the superior does not get very far. The person whom you complained about tells a different story to the superior and my complaint gets watered down and fall on deaf ears.

Pain

The past few days have been .....painful. My low back pain has played up.Despite painkillers and anti-inflammatory  round the clock there were times when the pain was intolerable, when I cold not move the lower half of the body with ease. Getting in and out of the car was painfully slow, I have come to appreciate how the daily functions are affected by low back pain. What next? Roll amongst my cacti?