Complaining for Vw service plan

I bought a new polo vivo at Vw east london this year on the 6/03/2019 .they told me that I will have a 3year service plan which is free and now when I was calling for booking They told me that I heard them wrongly and the service plan is not free.please help me because they are lying and if they have told me I should have gone for other choices because now I never planned to pay for service plan of 3 years