Yes! Be warned! Don�t order broadband then 3 days later cancel the order, as you will only cause great problems, hassle and unnecessary cost for yourself. 
When I spoke to Orange they said I would be on an up to 20meg service. When my account login came though it was showing an 8meg service with an estimated speed of 5.5mb. I was on an LLU service getting 10meg so I cancelled. The exchange is tavistock if you want to have a look.
I don�t see how the sales person on the phone can tell you what your broadband line speed will be, or are you in a non-Orange broadband network area? This will make a difference, as you will get upto 8Mbps speed not upto 20Mbps speed.
It was an estimated speed, I guess he was looking at the BT speed checker?
Orange have a ten-day broadband provisioning time period and must get a move on to get your connection changed over and you three days into this period cancel the order. 
I agree everyone can make a mistake but to suggest its my fault because Orange did not follow the correct procedure to cancel the order is madness.
Its not like I wanted to cancel the order 9 days in to the process.
I placed the order on Sunday night and cancelled in Tuesday morning...maybe that is 3 days, I dont know how automated the system is.
That said you make it sound like its hard.
They closed the account and cancelled the order in their own systems and that was it.
When they placed the order with BT would they not have been given an order/reference number?
Could they not simply place a cancel action against this order?
Why should it cause (given it was done with plenty of time to spare) "great problems, hassle" ?
However, all of this is missing the main point.
Every company makes mistakes. Its how those mistakes are handled that is one of the factors that differentiates the good from the bad.
Orange accept they made a mistake, apologised for the mistake and basically told me to have a coke and a smile........