November billing loaded with 10gb bundle @ R599 without my consent.

I went into Newcastle mall Vodacom shop on 22 Nov to extend my contract, did not take a new handset but changed the package to a u choose more data 2gb. they loaded a Promotional My Gig 10 - 1 Month Postpaid R 525.44 R 73.56 R 599.00 as well as Promotional My Gig 10 - 1 Month Postpaid R 122.60 R 17.16 R 139.76 which was discounted Discount Free My Gig 10 - 1 Month R -122.60 R -17.16 R -139.76 . I did not give consent for the R599 10gb. I sent an e-mail to ********** on 24 Nov and again today, also tried calling the Vodacomshop 15 times today - no one answers the phone!, also tried calling the customer care center, held on for 11 minutes without speaking to anyone. Very poor service and I expect the R599 to be reversed before 30 Nov 2017.