TRASH SERVICE

So I was a subscriber of Vox for a number of months. I had to move so I cancelled my subscription and informed them of my new address so that they could come and collect their router - THEY NEVER CONTACTED ME!!! Today I get a message that they tried to debit my bank to get R2000!!! When I contacted them, all I got was something to the effected that their courier partner tried to contact me and failed so they are billing me. If their courier partner's phone registers as SPAM (not my problem) then obviously I would not have seen the call (IF THEY EVEN CALLED!!!) Now they are telling me that I must (AT MY EXPENSE) send the router to them or go and deliver it. VOX fails (or does not even try) to collect the router, and I MUST PAY. NOT GOING TO HAPPEN!!! I have had the router boxed and waiting for nearly 3 months, and it still is... You have my number and address, PLEASE COME AND COLLECT AND REMOVE THE COST FROM MY ACCOUNT>>>!!!