Contract upgrade not loaded completely

In mid Jan 2015 I went to upgrade my daughters contract and everything was great and I was told the change would be implemented at the end of January 2015. February 2015 arrived with no change to the contract. Again I visited the same branch (twice) and received confirmation that the change would happen on the 28 February 2015. We validated that only 1 portion of the contract had been loaded and the data bundle requested was not incorporated. Nevertheless with the fantastic news that all will be corrected by end February 2015. Needless to say the date came and went and nothing had been changed. Today I visited the branch and was told there is nothing they can do I must wait till the end of March and the change will take place. I guess I believe them now as the change was only loaded this month!!! how does that happen that the correct data is loaded 2.5 months later. I signed an agreement with Vodacom, they fail to honour that agreement and I did not even get an apology, just ..there is nothing we can do! Is Vodacom not honouring my contract, do I seek legal advice to fight this monster \I do not care"organization?"""