Incorrect Telkom order of a contract phone

I saw an Ad for an iPhone 13 flex on 2, I requested for a call back, spoke to a sales consultant all went well. I got Debi check mandate, I authorized it. Got my delivery when I unbox the package an incorrect phone has been delivered. Okay, mistakes happen. I call in notified Telkom of the issue, I've been struggling since then, the incorrect hauwei phone was delivered on the 22nd of August 2025 we are now on the 03rd of September no one is assisting me. I have been calling Telkom since, no assistance. Spoke to more than 20 agents already they keep promising an sms that will be sent which I have never not even once received that will serve as confirmation of collection for the incorrect device. I want this contract cancelled. And Telkom must take their device back so we can part ways. I will not pay for this phone. If anyone knows how I can be assisted in canceling this order and contract all together. This is t gf e worst service I have ever received. I understand mistakes happen but the fact that no one is helping to resolve the matter it is frustrating for such a huge establishment. Telkom you can do better. This is absolutely unbelievable. If anyone knows anybody or any platforms I can get assistance.