MTN daylight robery

Good day

I am really not happy as a customer and feel that I was overcharged for the past 2 years. I took a contract in January 2016 and I was advised to take an option of an insurance with monitor 24. Was very glad to take the insurance I think I am paying about R115 a month. The contract ended and I am still paying for the insurance and I do not have a problem with that. I took another contract for data for my 2 numbers and I am paying R89 for each. For this month I discovered that I was overcharged for the 073 number debit was R192 instead of R89. When I was questioning this I was sent from pillar to post and I was told that I need to send the contract. But the contract does not allow to be sent to a 3rd party, and the lady that I spoke to today informed me that I was not overcharged. The other amount was for the insurance with MTN and to my surprised I explained to her that when I took the insurance I was informed it was the monitor insurance not MTN. Meaning I had 2 insurance on my 1 cell phone, and for the past 2 years I did not notice. But why was I advised to take the monitor 24 insurance if MTN also had an insurance? I would like to get my money back for the insurance that I paid for that I did not have knowledge on. This is just a ****************, was I going to be paid twice if the cellphone was ******? absolutely not so please do the right thing and pay back my money of the past 27 months.

Nokuthula Ngwenya