Vodacom Credit Vetting

I recently cancelled my MTN contract to move over to Vodacom. Went to open my contract at an iStore and apparently my credit score limits me from getting a contract which costs around R700 a month. Something must be wrong with their system. I have never been late on a payment, I earn a monthly salary that can definitely afford the contract. I pay rent, medical aid and obviously paid off my recent MTN contract over the last 2 years, which was purposefully cancelled to move over to Vodacom. Is there someone who can help me update my profile so I can support Vodacom by getting this contract?