dental insurance ********** sign-up

I entered the Liberty Mall branch of Edgards Pietermaritzburg to look at some stuff, at the entrance was parked a new car for competition marketing, there stood a lady who's name i did not get, she approached me and asked if i wanted to enter the competition. I told her that I am not here to buy today, she said no purchase was necessary to enter the competition and all I needed to do was show her my "thank you"card and she swiped it on the system, clicked on the signing pad, and told me to sign here to enter the competition, which I did.

A week later, i receive an sms and email telling me my "Edgars Dental insurance" documents will be mailed to me, what a shock I got... I never agreed to any such thing and have no idea that Edgars even had dental insurance....

Totally discuss for the integrity of the staff member who conned me into signing up for this insurance. I would never go back there knowing that ****** are working for at that store, next thing you know, my banks cards are being cloned. Totally unacceptable