sureterm insurance

having got a quote off sureterm for £310 fully comp,i thought happy days.went on the meerkat site,got quoted £207.04 with sureterm......happiness is,sureterm phoned me,went through the quote,and it suddenly went up to £511....i said to him you are having a ####ing laugh.
adrian fleece wanted £480
elephant wanted £948
lancaster wanted £352
and i said "oh no" to churchills £1070.
im 41,clean licence and 18 years ncb,dont use it for commuting to work as i have a company van...
frustrating

I'm sure most of them make it up as they go along!

yes,i bet they add it on to cover the cost of phoning my mobile number for half an hour?