Worst treatment from cell c ever

Long story short. I have 3 contracts by cell c. I have never had any problems by them. Until May 2017. When I bought a router. Since then their service has gone down. I have been strugling with them since may month when i bought it. Everytym get told we sory we sory but never getn the treatment i deserve. Its almost a new year and im still struggling. It would **** anyone off. I want to cancel this router which hasnt been working since i bought it and have been payin installments every month mind u. Can some one please contact me. I booked it in an ftchd it last sat. It came back worse. Can I please have some assistance with my non working router bought by cell c and payin for it?????? This is reduculous how you treat your clients! I am reali unhappy with cell c. I have never experienced something like this as a customer and will NEVER refer anyone to take out a router contract from cell c.