Poor Vodacom Service

We have been dealing with this issue now for more than 2 months with no resolution. I bought my wife a new IPhone 15 Pro max that only takes E-sims. 0n the 16th of Aug we change the contract to the e-sim with no problem. The phone was working fine. At the same time, we agreed to upgrade the contract, which will be effective on the 1st of Sept. As soon as the upgrade was activated the phone had only data connectivity and no call connectivity. We are in the 2nd month of trying to sort this issue out with Vodacom. We have visited the Vodacom shop at Midlands mall now around 12 times to try and sort the issue out. Every time the issue gets escalated with no resolution. We are currently dealing with *** at Vodacom, but still no resolution. At this point Vodacom is saying it is the phone. We did not except that and went to MTN and installed Pay as you go E-sim from MTN. It is working perfectly fine with the MTN e-sim. It is clear the issue is Vodacom. We have been trying resolve the issue now for nearly 2 months. In the meantime, we are paying Vodacom for a contract that we cannot use, and my wife have to travel around in SA with no working phone. I have never in my whole life experience service like this from any company. It is completely unexpectable. Please feel free to contact me via WhatsApp on the following number if you need more info *** or ***. I am willing to go legal with issue as it is not poor service anymore, but rather theft.