Telkom Mobile data bundles are a *****

I again bought a 14 day 1,2 gig data bundle for R17-80 via *123# yesterday. I got a balance of my data this morning and it states this bundle will expire on January 28th. This is not 14 days and I am tired of being forced to use this data bundle before it expires earlier than advertised. I demand to be compensated. This is not.the first time this has happened. It continues to happen each time I buy this bundle.