What to do about a bad surgery?

My mother got a fistula made in her arm two weeks ago. (This is something common for dialysis patients.) Last week we went to an appointment with her primary care doctor and he was obviously shocked by the condition that her arm is in. As he described it her wound is not put together properly - one side of the incision is higher than the other creating a ledge. I think this is probably the reason it is not healing well. The wound is also running *a lot* of clear liquid. Her primary doctor thought that this is lymphatic fluid and that the surgeon accidentally cut into her lymphatic system. The doctor also said that the incision is much bigger than he has ever seen. Her doctor immediately contacted the surgeon's office and they asked my mother to come in immediately. We drove over an hour to get to his office and he barely glanced at my mother's arm, quickly declared it was "fine" and left the room.

Today at dialysis my mother showed her arm to the people working there who said they had never seen anything like it and called the surgeon's office. The surgeon's office said that a nurse practitioner will call back on Wednesday (two days from now). I do not like this answer at all. It doesn't seem possible that someone who can't even see the wound will be able to help.

Should my mother try to contact a different surgeon? Would a new surgeon accept her as a patient or would she be considered "off limits" because the surgery was done by someone else?

Don't tell me to sue.