Please Telkom management, review and do the right thing

Good day good people,I would like to ask if there is anyone with similar problem as mine from Telkom,I got a call sometime last year from them telling me about the 10 gig router special which was R105 monthly payment for 24 months,which I agreed,they then took my details and my home address and delivered the router,I was good with the router untill I skipped two months payment and I went to Telkom at Bright Water Common Mall in Ferndale to ask in store how much am I owing for me to settle the bill,I was told it will be about R720 next month,then I asked the guy how come because it was only two months and it should be R210,the guy told me there are reversal charges if no money was found in the account,again I asked,how much is the reversal charge,he had no idea but opted we logged a call with Telkom,we did and he told me they will call in the next 5 minutes,which they never did till to date,it's been 3 months now and today again I decided to call them myself after I received my invoice from Telkom via e-mail,I'm now owing R815,I called and asked why my bill was escalating so high and this quick,she responded by saying my reversal fee every month is R 202.i asked her but why and how because it doesn't make sense for me to pay R105 and be charged R 202 upon missing payment,she then proceeded to say it is written in the contract on the terms and condition,I didn't sign any contract,no one read them to me and now I'm being told this,all I need from Telkom is to do the right thing and not ruin people's life,my name is Lexi Vincent Molaudzi and my contact number is ***,to whom it may concern