Misleading clients just to make a sale.

A service was sold to me by a lady named Roxanne Stewart who advised me she is from Standard Bank. She sold me a policy that supposedly takes care of the service as I purchased a brand new Nissan Np200. She asked for my oder metre reading and quoted me. My vehicle was booked for service at Nissan Pinetown on the 27/07/2019 . The lady from the service department advised me the claim cannot be authorized as there is a 3month waiting period. I was never advised this on the call nor does it state that anywhere on my policy. Nw my vehicle is going to lose its warranty coz I did not budget myself for this. After complaining, still no feedback, the lady said she is working for standard bank, which was a lie. So these companies mis sell to us citizens and gets away with this. When I called In this morning I was kept on hold for 20min before the guy can tell me I must wait 7days for a call recording. So wat do I do now? Take 7 days leave from work coz I cannot drive my vehicle? I need legal advice to take this up further...