Not collecting tablet

I have received a tablet via Elite mobile on behalf of Vodacom and this tablet is faulty. When I took it to Vodacom for inspection they confirmed that it is not working but Elite mobile should collect it. I have phoned Elite mobile several times since July when I first lodged the complained to be informed that Vodacom will collect the faulty device. Since then I had phoned Elite mobile several time to ask when this will be collected just to be informed that they have escalated the query to Vodacom as Vodacom is responsible for collection. VODACOM IS NOT COLLECTING THIS FAULTY DEVICE SINCE JULY AND I HAVE TO PAY REGARDLESS OF THE FACT THAT THIS DEVICE IS NOT WORKING. Can Vodacom please wake up and collect this device and cancel the contract as ELITE MOBILE INSIST THAT THEY CAN NOT DO IT. Service from VODACOM and ELITE MOBILE is absolutely pathetic.