False advert and display truworths mams mall

I bought a phone because it was displayed and advertised that it comes with 20G free data of which is a lie, no data no communication. I made several calls to the truworths head office no one seems to have answers which proves that sales are made with false and misleading information. The customer service there is bad I use my time and money to call the store in mams mall and the head office all they know is that they are investigating, what is it that you investigate ? That u present false information? Mtn rep who doest respond to emails, I wouldn't recommend the shop to anyone better buy ur cellphones else we're.