Useless Vodacom

I continue ( at least one per day) to receive Message Alerts on my Vodacom message box from ***. Upon listening to the message the only recording I hear “ please press 1 to proceed” and then it cuts off When I investigated with Vodacom they advise this is a recorded message for account queries My account is not in arrears and has never been in arrears for the past 23 years Again, upon querying this irritation with Vodacom - they respond that they have no solution and can’t understand the cause This is acceptable