That's awful treatment, I would also contact PALS.
Have you read this?: www.nice.org.uk/guidance/cg132/chapter/Introduction
It's the guidance for maternal request CSs.
Whereabouts in the country are you (roughly)? From the forums here I've read that some London hospitals refuse to adhere to this guidance, so wonder if that's relevant to you?
Have you seen a consultant at all during this pregnancy? If so, do you have contact details for them? You're rather short on time so I'd go for PALS and the consultant (if you have details) tomorrow. You could go for something like:
"Dear X,
I first contacted my midwife about a maternal request CS on X date. Since then I've raised the request again on Y and Z date, at which point I was told a referral had been made to the consultant.
In the four weeks since I've not even had the referral acknowledged and when I tried to chase it up with the X department receptionist was told I don't have a right to a CS, despite the NICE guidance clearly stating otherwise.
I'm 35 weeks pregnant and need this dealing with as it is causing me a lot of stress.
Please could you help me to find out what has happened to my referral and let me know what the next steps are to improving the poor advice and support I've received so far?"
You might also want to contact Birthrights ( www.birthrights.org.uk ) who should be able to help.
Good luck 