As a three-time cancer survivor, I understand what a shock to learn that a simple polyp was active cancer. I know you must be very distressed, I'm sure all of us would be. Sometimes it is hard to tell cancerous polyps from benign until it is removed. I'm supposing this is the problem you have experienced.
Some medical professionals do show compassion but some of them are just good at their skills but not so good with relationships. It sounds like your doctor was the latter.
Give the office another day or so, perhaps they are waiting for the final biopsy results in order to stage the cancer cells.
How are you feeling today? Are you dealing with a lot of discomfort? Praying for your body and emotions to settle and adjust.