Vodacom contract issue/contradiction

I took out a Red VIP contract with Vodacom in July 2021. The contract entails 15GB data, Unlimited minutes and unlimited SMS per month. I work in the health sector and I took out the contract because I need to be constantly in touch with emergencies at the hospital.

On 2 August 2022 I wanted to make a call to the hospital and the message on my phone was "please recharge your minutes as you have run out of credit". This on a Red VIP unlimited voice contract. I called Customer care and lo & behold i am told that I am on an unlimited contract BUT with 65 minutes limit. Boggles the mind how something unlimited can have 65 minutes limit. For the last 12 months i have been using the contract without any problems. Vodacom will have to be held accountable should patients die as a result of this behavior.