On 3 separate occasions ,by different people, i was told if i switch into a visitor visa category (since i will be waiting for my results) i wll be able to switch into the IGS later on if i passed.I called the Home Office today only to be told that you can not switch into the IGS scheme as you are not in the eligible switching categories which are;student,student nurse,to resit examinations and to write up a thesis.
.I told the lady that based on advice i was given by the home office(i had been told that as long as you do not travel outside UK with your visitor visa you should be able to switch to IGS) i applied for the visitor visa on the basis that i was going to be able to switch in country to the IGS.She was adamant that i could not do that and i risk a visa denial if i applied in country 
Why does the home office issue conflicting advice on such matters???.its sad to learn that i can't switch at the last minute like this.I think this should be a lesson to people not to rely on home office telephone advice as anyone can tell you anything yet when it comes implementation they are now found wanting.Is there another way i can switch to the IGS in country?????.pliz help me as i had got conditional job offers and the process of going back home will be costly and will take 2 months for me to get entry clearance!!!