I received a bill from orange this month of £751. I called them and they said it was mainly data charges.I normally pay £18.50 a month for my contract that includes of 500 mb internet. I am always within this limit the most mobile internet 180mb was (once only) And I use an Iphone 3gs.But I wanted to change my phone to iPhone 4.So I called orange customer services and asked for a micro sim because it is smaller.And iPhone 4 takes the smaller sim. Firstly They didn't want to sell it to me because they wanted to sell me the iPhone bundle which contains 750 Mb of internet for extra £10 a month as long as I have the iphone..I explained to them that I don't use so much internet and what I have is more than enough for me. And they put me through to Iphone team.they explained to me the same thing and told me i had to have iPhone bundle otherwise they wouldn't send me the micro sim.and also told me there are a lot of people buying sim free Iphone and use it as normal without letting Orange know so therefore Orange loses money and they are determent to catch those people. I refused to buy the sim and the iPhone bundle.And carried on using my 3gs. But the very next day I noticed my 500Mb internet went down to 36Mb from 475Mb suddenly.in one day.So i called orange and explained but they couldn't fined anything(so they said) and then I got scared and bought iPhone bundle.for the following month. But i don't know what they did inside but my internet was going down like crazy and I was using it as normal.but still manged to go over my 750Mb per month limit without using it.And ended up with £751 bill.I called orange many times and asked to speak to a supervisor twice and they told me they would get back to me but nobody got back to this day.So I wrote to them 3 weeks ago recorded next day delivery but not an answer in 3 weeks. Now I don't know what to do.They don't communicate with me, I feel like I only exist to pay their bills. They told me I used the internet so therefore I had to pay the bill in full. Please help... Yucel