I am slightly confused since your posts seem to be contradicting each other. But anyway, regarding the acceptance rate, rumour has it that 5 out of 6 who are interviewed at the campus eventually get accepted. If coming to the UK is not doable for you, you can present your reasons to the Admissions Team and ask them if it is possible to conduct a telephone interview. Surely they are reluctant to do so but it is a perfect time to show them your negotiation skills.
congratulations! i remember there is one lady interviewed by cambridge last year (she was very active and you should fine her posting in 'cam/oxford, which to choose'). She talked about telephone interview last time