Mtn Misleading and it's empty promises

I was mislead by MTN sometime in November last year, they renewed a router contract with 10GB which is way less than the contract I had before that and they're told me that it is more than what I was getting before but I will be still paying the same amount and I took the contract.

In December data run off in less than 2 weeks time and again in January it did the same thing and that's where I called to enquire how much data exactly I was getting only to be told that it 10GB which was a shock to me and I was never going to sign for that. That was at the end of January and I wanted to be put through cancellation department which they did and I cancelled the contract, after a week I called again to follow up on cancellation and I was told that it was done. Boom on the 17 of February they topped up the contract and I called same time I see the message to query why was that as the contract was to be cancelled and the person I spoke to told me that cancellation was never done, the only thing he can see is the request for cancelling.

Today I called to speak to the manager and I was told that he is in the meeting and the other one is working from home the best thing that they can do is to take my details and give it to him after the meeting and I got cut off before even providing my details but I'm convinced that they could see my cellphone number as I was calling using MTN cellphone number so if they wanted to take it down they could have done so and given it to the manager for him to contact me about the query because I already told the lady that I spoke to that I was mislead and wanted to cancel the contract which was also promised but not cancelled and that lady checked and told me that the cancelation fee that I need to pay before the cancelation is +R900 which I was not told about at the beginning when I requested for cancelling that was not done.

To me, this is ******* and it is totally unaccepted because; 1. I was mislead when taking that contract.Being promised much data which was not gonna be done. 2. I was told that the cancelation is done and even when I follow up I was told that they can see it going to be done. 3. Only today that I'm being told about that +R900 early cancellation charge that I need to pay. I mean what exactly am I paying for, Their misleading? The reason I want to cancel the contract is because I am extremely not happy about what I was told and what I am getting. The minute I confirmed the cancelation I went and signed up with the other network provider for the router because I still needs it, so now I must pay so much for cancelling with MTN and again for the provider that I'm currently using? If I was told about this whole thing I wasn't going to go with the other network soon but only after sorting out this query with MTN. This is crazy and I'm extremely not happy. If they want they can check my profile I've been with them ever since I started having cellphone (2006) but this experience makes me think otherwise even with my main number that I still have with them.

Mtn always tell us that the recording can be sent to you on request but now that I want it for when I signed up for this contract they're telling me about Mondo department which is chargeable when u call them, this whole thing is disgusting and tiring.