Poor service at Vodacom

I am a customer since 2004 with Vodacom and after I phone to make changes to my debit date it was never done on the side of Vodacom. So they can not talk about customer service because customer service does not exist in their vocabulary. Due to Vodacom's mistake to debit my account on the wrong date it put be in a bad light with my bank. I am planning to cancel all my current contracts with Vodacom and move over to another service supplier where I will receive the treatment as a valued customer.