Capitec must give me the money I signed for

On the 13 of June I went to capitec Alberton to renew my expired card, the consultant helped me so very well and she even offered me a credit card increase on my existing credit card, I said No and she insisted and I said yes. We went through with the application and it was approved from R28000 to R46000. I signed the contract and everything went well however the funds were not credited they said maybe is system error I should come next day, I went again next day if approved again and another contract but funds not credited, they called their head office and they logged an incident Reference *** they said they will let me know when is resolved. On the same Saturday I went for follow up, when I get there they said they were about to call me as they got feedback and head office advised everything is fixed they can now credit the funds, they did that and at the end everything changed and they said I no longer qualify, how is that possible, I have the contract, I need the money that I singed for on the contract.