Misleading advertising Black friday special

On the Black friday special there was a 30GB recurring offer at 75% discount. I chose the option but when I went into my account via the vodacom app I see I have been charged twice foe 30GB deal at R 231 each. Showing as 30BG_Bonus data Bundle @ 75% discount and another 30GB Bonus Data Bundle 75% HYB. I only received on 30GB. I phoned vodacom customer care but the agent says she can only see my November invoice which is my normal 5GB bundle. I was not given a reference number. This was misleading advertising...