Active but expired policy!

I emailed to find out if my service plan was still active, even said in my email that my car is due for a minor service. Customer service rep**** to my email stating the policy was still active. After taking the day off work, arranging for my son to be taken to school and taking my car in, Renault said that Bidvest says my policy is expired. I called Bidvest who said that i should've checked my policy details after i explained that my policy documents were ****** out of my car with a whole bunch of other things thats why i sent an email and getting approval before taking my car in. Making it my fault that their consultant made a mistake! Not taking any responsibility for their *********** staff. It was such an inconvenience and could not get my car serviced in the end.