Poor Service and no value add for long term clients

I received my invoice and noticed an increase in the billing to find out that I was billed half the month for the upgrade. I logged a call as recommended and received a RCO reference number 2 weeks ago. To date, no call or feedback on my query, and when you call you sit and wait for a long time and then eventually cut off. I was told feedback would be given within a week. The service is shocking and I feel they are quick to ask you for an upgrade and when you query, well no bother. I have been with Vodacom for 20 years and you have the cheek to call me a valued client, oh please empty words and false promises. Shocking shocking!!!!! The amount goes of the end of the month which was not budgeted for, but do they care, hell not!!