VOX-Come COLLECT the 2 UPS'-Am not paying R699.00!!

I cancelled my UPS contract with VOX as my first one broke and it was replaced with a reconditioned one. 3 months ago I cancelled it and bought my own UPS because they take days to come out and fix it. It was cancelled but then a month ago , I received a call to say that a courier company had a delivery for me. Upon opening the parcel, I saw that it was a brand new UPS but I had already bought my own and DID NOT ORDER ANOTHER ONE. The courier company then phoned me twice afterwards to say that they will be coming to pick it up but they never did. Now is it my job to run after them and ask them when they can come pick it up????? So this month I received an invoice to say that I shall be charged R699 for the UPS which I haven't even used. I don't see firstly why I must pay it and secondly why did they not come pick up the broken and new one. I advise anybody who is working from home to NOT rent a UPS from them. Rather buy your own. The amount of money that I've paid for renting it, I could've bought 3 of my own. Vox and their customer service is PATHETIC once again!