VODACOM - USELESS AND INCOMPETANT

i changed bank accounts some time ago. With me having changed bank accounts, I have been making manual payments on a monthly basis and sent the proof of payment to Vodacom's so-called Accounts department. Despite that, they still block my account, which tells me they dont care to read emails. I have been on the phone with them numerous times explaining the same thing over and over again but useless and *********** they chose to remain! I have never come across such incompetence and uselessness. They clearly striving to be this way cause no service provider that prouds itself in its service deliverance would ever deliberately elect to be so useless in such a committed and dedicated manner. Useless is what Vodacom is!