Poor service

I have not received my monthly statements from Vodacom. I have emailed customer care, no response. I have gone online with Whatsapp and Tobi conversation, useless exercise. Tobi requested Vodacom to call me, which did happen, but I just help on to the phone until it cut out. I still do not have answers. Very frustrating when a company cannot do what they are supposed to do. If I do not pay one invoice, I am cut off immediately, but customer service does not seem to feature on their list.