Bad billing service

I have been a Vodacom customer since July 2007. I have always had a contract and my personal bank account is debited every month - therefore I have never missed a payment, or ever had a payment RD. Now suddenly since earlier this year Vodacom has taken to sending me payment reminders from an automated system. Another one arrived yesterday, reminding me to pay my account by December 1st. It's pointless trying to communicate with this message as it keeps on responding that you should choose a payment option! Why am I receiving payment reminders when Vodacom takes the money out of my account every month! A call to Customer Service did not provide any solution, other than my query would be escalated, and this morning I received an sms saying that the query is now closed. This is shocking treatment of reliable customers who pay their bills every month. I had the same problem with MTN for 10 years before I moved to Vodacom. it seems that the more honest you are, you pay your bills on time, the more your are hounded by these big companies and treated like a ********. If it wasn't for a good and constant signal and reception I would change to another provider. Vodacom needs to take a good look at how they treat faithful and reliable customers. If this is their modus operandi for loyal customers, then they don't deserve to be in business.