Great at taking debits, poor at delivering

I have phoned Vodacom a number of times requesting specific information, I have received 6 different answers from 4 different departments/people. I have had three promised that I would be contacted back by the relevant department. Three days later and it once again a scenario were you phone in to a call centre, tell your whole story from the start only to be put on hold or they just drop the call. Promised high and low they will see to my issue, then nothing. You call in again and the same proces starts. Just passing the buck to different departments and no one takes some responsibility. This is a last resort to get some kind of response.