False contract

Good evening evening

I have receive a new sim cotract of vodacom through mondo mobile . according to agreement I was supposed to receive 30gig data and 10 gig night owl, however the actual data I have received is 13,5gig and 6,5 night owl, which I realized the day after the day of delivery, the actual data used up to the day I stopped using the sim was less than 159 mb according to my devise usage counter. So I am asking mondo to do what is right by abiding by the term of agreement else the contract will be considered as a bridge. and I will be compelled to block debit orders. I have for many times tried to conatact customer service but even now no one has given me an attention

regard GM Khoali