A couple of months after having my car serviced I have just had a phone call out the blue from Audi saying that it needs to go back in for its 2 year aircon service at £99. WTF!?! Never had that on previous cars. Apparently, if I get a fault with it andhaven't had the service my warranty on the aircon will be void if it is deemed to be due to me neglecting to have the service. Opinions please.