Unable to solve billing issues

<p>I receive my monthly statement (e-billing) from Vodacom via email for the last 3 - 4 years and all of a sudden I don't receive it anymore - for August and September 2016. I've contacted customer care 3 times already and each time spending anything between 5 - 10 minutes on the phone with them without any results as I still haven't receive my invoices. Also requested the operator to speak to her supervisor but was told that she will call me back; it's 4 days later and no-one has called me. Also I haven't got any call back from vodacom when using their call back service when hanging on to long for a operator to assist. Overall I'm very dissapointed in vodacom's service as I'm a paying customer with them for almost 12 years and never missed one payment and thats the type of service I get. </p>