1gig data not loaded

I had the most horrible experience with Vodacom. I recently got a new in May contract which was for 75min and 1.258g of data. The beginning of June only 258mb of data was loaded on my phone. I opened my contract at vodacom Cresta and was assisted by a consultant named Pascal. I call the call center to as why was 150 min 258 mb of data loaded instead of the 75min and 1.258g loaded. The consultant over the phone then explain the contract I have is different to the contract i have. I then went back to the store to ask why was my data and mins not loaded as agreed and he explained that vodacom did not load my 1gig data and he logged a call my data should be in on Tuesday 12 June. Today I get a call from vodacom stating they can not load my data due to 15mb being replaced in place of my 1 gig. The consultant said this matter will be escalate and she will keep me updated. I then called the call center again and they said I should go back to the store and find out why I do not have my 1gig. I then called the store to speak to Pascal the consultant who helped and he was off sick. I requested to speak to the store manager who is Ricardo. Who was an absolute jurk. He was not helpful very condescending. All he said was his logging a call and I need to wait 3 days. I still do not have the 1gig data and have gotten sms that the calls logged have been closed. I am utterly disgusted in the manner vodacom has handled this situation and I'm a long paying customer with previous customer. CRESTA VODACOM has added to the bad service especially the store Mananger. He is unfit to help customers and should not be in that position. I would like to cancel this contract with Vodacom as it's in breach of this contract by not providing the terms of the contract signed by myself.