I want to swear for the first time ever but I won't.
HOW CAN THEY SAY 'WHAT MAKES YOU THINK YOU NEED A SECOND SHOT?'
You aren't supposed to think anything, the doctor is. Are they podiatrists, do they treat footpain? Call them back and ask them what makes them think they know how many cortisone shots to get or what cast you should wear.
I can't believe this stuff sometimes. You need someone like a Robin B. in your corner.