PATHETIC CUSTOMER SERVICE

I queried my Vodacom account because of data charges which was ridiculously high. On 20 December 2017 the lady at customer services admitted and confirmed that due to their system error Vodacom charged me unnessary fees for data usage. She also confirmed that I did not have any apps running to cause the data usage. As always with Vodacom you have to be rude because they are just pathetic. On 22 December 2017 I received an sms confirming that I will be credited with the amount of R1200.00. Today is the 19th Janaury 2018 and when I logged another call the guy at customer service confirmed that no credit was done. He was going to forward this query again to his manager Ziyaad from the ADS Technical department. He also confirmed on the recording that this department ADS Technical who is responsible for solving the queries does not phone back the customers as they are supposed to. When I wanted their number he did not want to give it to me. Why does Vodacom have such a department if they don't take calls or phone back the customers? Is it because they know they are *****ing data? Also Vodacom was quick to tell me I am out of data bundle but now that they once again are the guilty party they take forever to credit me. Now again I have to wait and see what their next excuse is going to be and how long it will take for this credit to be done. Also Vodacom has been doing this for almost two years that I have the contract and I demand that they look into my account for all these months and see how much credit they actually owe me.