Vodacom is useless

Vodacom has ignored my call limit which is supposed to be set to a maximum of R50 for both calls after my minutes have run out as well as data out of bundle. Today, Vodacom proceeded to charge me R2 500 over my normal data without sending any warning that I was going out of bundle. I phoned customer care (in this process my call was dropped 4 times) and all they can say is that they cannot help me solve the problem as I need to follow the normal dispute resolution process which means until the matter is settled I do not have access to my account, despite being a loyal Vodacom customer for the last 15 years. This is on top of them double debiting my husbands account at the beginning of January, the most difficult financial month. I am tired of always struggling to get straight answers and above all I am absolutely disgusted by the lack of customer service, no one seems at all worried about assisting me with my problem. I think it might be time for a changr in service providers. I mean, can it really get any worse?