Who is doing the scheduling? The doctor, his assistant or the hospital/surgical clinic? The next time they try to schedule it and you know that is a bad date, tell them no. You tell them when will be a good time and be firm. Take someone with you for moral support.
If they will not work with you, write a letter of complaint to the hospital/surgical clinic director. I have no problem writing a letter to complain about a problem. As long as you keep quiet, they will assume they are doing everything right. Sometimes you need to work from the top down to get things done.
Reta
What is a leak procedure? Are you taking about a LEEP procedure?