Broken router 20 days out of warranty R1500 to fix new router costs R1700

So i took out a two year cell c data contract in September last year with 50 gigs day and 50 gigs night with a sim and router. A few months ago a better deal came up and I took out a new contract for 200 gigs anytime, but I had to pay the router up that I took the first time and only take a new sim. so the 2nd week in October my router breaks(the one the I paid up) and I took it in to cell c Kenilworth. Cell c came back to me stating that its R1500 to fix the router... and a new on would cost me R1700, when I asked what is wrong with the router the answer was that it is out of warranty by 20 days... the warranty ended the end of September, so now 6 weeks later I am still without a router. I asked what's wrong with the router they can give me an answer (except that its out of warranty). the router has been standing in the same spot for more than a year, I cant even believe that its broken, it never fell or no malicious damage took place. last month I had 120gigs left from my 200 gigs and had to pay my contract in full... i'm very disappointed as I feel im not being taking seriously as a customer but my money is good enough.