Can't End My Cell phone contract

I've been a Vodacom client for longer than my eldest son is around, which is 16 years. But for the past year or more, I've become more and more disgusted with the incompetence, ineptitude and disregard for customers. Today I literally just sat in one of their stores and cried!!! I am that fed-up! So the consultant says: just go to social media. Hopefully someone will help you then because we can't 😭😭😭😭

Back story: phone I had was about 5 years old, if not more🙈 In 2023,i accepted an upgrade over the phone. Returned it after a few days, via courier, as I realised it was actually expensive. This contract on this phone was never canceled. The insurance on this phone was never canceled. Apparently, I was supposed to do it. Never took out insurance for this phone, but that's neither here nor there, apparently.

So since last year, I've been trying to cancel my original (5 year old phone) contract. But because no one ever changed the terms on the returned phone, which they acknowledge, no one has been able to get this contact canceled. I've just had to pay and pay and pay. I've spoken to sooooo many call center agents, supervisors, managers, gone in store, nothing changes! Meanwhile, in store, I find out about the insurance. cancelled it in store, right there. Only to be told 3 weeks later that I'm still paying. Canceled a 2nd time, phoned in myself this time, and today, 16 June 25, I'm still being charged insurance 😭😡🤬 Phoned the supervisor/manager yet again, and was told they are sure "she'll be in touch" It's been 2 weeks since I spoke to her😔 Will I never be free of this company or this contract? Is "go to social media" really the best you can do Vodacom Cape Town Regional Head Office ? Because that's pathetic and disgusting! I WANT OUT! I'VE HAD ENOUGH🤢🤮😤😭😡