Insured my new Mercedes Benz C Class last year based on a clean licence held for 13 years with 13 years no claims bonus for £700. My renewal came through a few days ago for £1521, almost double. Also I noticed on the renewal they had put my occupation as a Marine Electrician when I actually work as a Maintenance Engineer. I called up to to correct their mistake and also decline the renewal unless they could offer me anything close to the £750 quotes I have been getting on comparison sites. To my surprise, they said they would immediately have to cancel the remaining 3 weeks insurance I have left unless they corrected my occupation. Right. Ok. Requote for 3 weeks, that will be an extra £1000 to pay. This is absolutely ridiculous bearing in mind it was their mistake and even more worrying, if I would have had to make a claim they could have potentially not have paid out. I have now lost a Years no claims bonus for ending early, not that a year would make any difference to my 13 years I have already but it's besides the point, I've lost 3 weeks cover. I went with Lloyds bank car insurance as they were the cheapest. I will never take out cover using any of their products again. Shocking service. Darren. S