No internet but still payment

I got a new contract from Telkom last year and had issues from day 1 with the 3g router I recieved. The issue was in the area and there was many technicians at my home to try and sort out the internet issue. I did not have any internet for 4 months but still had to pay for it. only time when the internet worked was in the afternoon for a while but it was very slow. I was paying for the account but could not use the internet and I was on the phone how many times with telkom and they say they are going to get back to me about the account and still I have recieved no feeedback. I want those 4 months premiums back or they must change my account to uncapped for free.