Huge data cost implications

Once again another 3 weeks and still no data or any feedback? This query has now been ongoing for almost 2 months.... There has been huge cost implications (R555.25) for data used, since data was not allocated as promised ( 10gig data for 3 months (30 gig postpaid) as the contract stipulated when I did the upgrade)

I`m keeping my end of the contract by paying, but Vodacom is breaching the contract by not delivering