Poor service

Have had a Vodacom account for over 20 years and in the last few years have never experienced such poor service from a service provider . A few years ago while trying to obtain some info on my package found out that the ID Number reflected on my account was not mine. No one at Vodacom could tell me how and when the ID was changed and the Customer Services Agent suggested I log a ***** case so that the issue could be investigated, which I did. Never heard from Vodacom again. A few months later, while in one of the Vodacom shops, found out that the ID Number on my account was still not changed. There and then I requested the Agent to please rectify the ID Number with Vodacom and thought all was sorted until next time I needed some info. Already been to a Vodacom shop at least twice without any joy and just over a year ago again requested my ID details to be corrected directly to one of the Supervisors from the Vodacom Customer Services and He was more interested in being arrogant and important than sorting the problem, as my ID Number is still not corrected. Can't understand how difficult it is to have the ID Number corrected on my account... After trying a few times to sort this issue with Vodacom there is only one word to describe such organization... USELESS...