Bad service

I’ve never come across such an *********** call center agent as Vodacom, on the 13 February I wanted to change my Apple billing method and had issues with it and I got an error message saying “ There may be a billing issue with your mobile account. Contact your provider or add a new payment method” and I was told to contact Apple of which I did and Apple referred me back to Vodacom saying everything on their side is fine and the payment method has updated. I called again on the 14 February and I was given a run around by the Vodacom consultants saying the problem is with Apple but the messages clearly states that the problem is with my mobile account. Can someone more experienced help me with this issue as I am struggling to get this right.