Charlton Cars

Used to ALWAYS use this cab firm, but today...I was estimated 40 pounds for my journey,,driver arrives and now I'm told it's 45.00 wth!!! If I give you the postcode and you tell me a price I do not expect an increase randomlyI wasnt told it was an estimate, I wasn't told around 40 pounds. I WAS told 40.50. so that's what I should be charged!!!...