Unfair treatment

I had a contract Vodacom tablet with Ismart.They deduct R369.00 per month and load My Meg 500 data beginning of each and every month; so 01 August 2017 i did not receive my data while upon checking whether they have loaded my data the tablet was showing 'INVALID CONNECTION' i called Ismart the consultant said to me i must go and register my contract sim to Vodacom shop. Vodacom registered my sim then i had to call Ismart to inform them about the registration of my sim card.upon calling Ismart the consultant said they will load my data on the 20.08.17 only to find that even today i am still waiting for them to load.