Router problem

This Company is giving very poor service,i have been with them for over two years and then decided to leave as they had poor service.they then wanted to debit my account with the amount of R2000 for a router that they have provided me with from a contract that stipulates that after 6 months the router would be free unless i leave them before the 6 month period then i would need to pay for the router.

I just had a look at they t&c's on they website that has changed from the year that i singed up with Webafrica.

I am not the first person to have this router problem that have been given on this type of contract when signing up for LTE also they wish to charger me for them picking up the router. Webafrica can forget about they router they must pay me if they want it back as they do many people wrong.