Poor customer service MTN/summermobile

A company called 'summermobile' contacted me almost 2 weeks ago on behalf of MTN to offer me a deal as my contract is a month from expiring. Pamela offered me (or so I thought) a 256gb iPhoneX over 24 months for 1049 with 300 mins and 2gb of data. What I apparently didnt hear is she moved the deal to a 36 months contract. I only realised this when I got the upgrade sms stating this. I then called in to get the contract edited which took forever as their website number is incorrect. Once I got through she was not available but called nack in 5 mins to tell me that she listened to the call and I agreed to 36 months. I am awaiting the recording.

I then canceled that deal and opted for a 24 months contract with 150 mins and 1gb of data for ~1159, she said/promised she will call back and update me on the process and no calls. I have had to call this place 4 times now to speak to her or someone incharge.

I am now told the cancellation will take 5-7 days and then they will have totake out a new contract for me (this was 2 days ago). Today I receive a call from the couriers to say they will deliver my new phone tomorrow, but I cancelled? I call summermobile and speak to customer services Connie who tells me the same 5-7 day story, I ask to speak to Pamelas manager and she says she will email her as she cant tell me what time I will be called back, I suggest she walk to her to address the situation as I assume they are in the same building but poor Connie says that shes the only one there and then goes quiet on the line.

Long story short, I feel duped into taking out a 36 months contract which was then cancelled and followed through with more lies and bad service. I have a decent enough contract and high usage of greater than 1k per month. I have been with you guys (broken service) for more than 16 years, how about actually giving me some decent service and maybe an actual deal? Or perhaps it doesnt matter and you prefer if I port?

Can MTN please: A) Stick to the original offer of 24 months for 300 mins and 2gb of data or cancel my contract as I am not going to accept the phone tomorrow. B) Please send me the call recording for my initial discussion with Pamela at summermobile, as a consumer I believe I was sold something which I didnt agree too. C) Simply stick to promises, when you say you will call, actually call. She agreed to call me back at 10am yesterday when she starts work, its 30hours past that and still no call.