Make another appointment with a consultant. Look very well prepared, with notes, questions etc.
Ask the consultant the risks of your tearing again this time and whether they can guarantee you won't tear/be cut this time (they can't). Say that the risk of your tearing is unacceptable to you.
Sit there. Smile. Silent.
Ideally, have your partner there too, staring at the consultant. Sit there. Smile. Silent.
Ask again whether they can guarantee you won't tear.
etc
If no go, then ask to make an appointment with another consultant in the same hospital. Or ask to be referred to another hospital.
Ask to see your hospital notes to ensure they correctly record the conversation.
Key is not to give the consultant the option to say no. Just say this is what I want. Smile. Silent. Don't budge.
Be a PITA. Make it clear you won't be fobbed off.
I got my elective approved quite late in the day ie at 37 weeks. I suspect that the consultants will try to delay it as long as possible, but the closer to your due date, the more likely they will be to agree. Keep the pressure up all the time though.