How does Vodacom still exist - customer service is non existent

Nothing new here just remain terrible and useless. My issue remain. Took out a contract with a surface pro 2. Device broke within 3 months. Return via Windows, new device broke after 4 months. By this time I don't have the time to send and look after broken devices. I moved on. When I tried to cancel the contract by sending all the devices back to Vodacom they said they can't and I must take the device in to their repair shop. What a joke after taking the time to do so and driving 60km to the closest repair shop, the repair shop told me there is nothing they can do. So I am still stuck with a device I am paying for which doesn't work. Please note the device wasn't dropped screen is not cracked I still have the charger and original casing and Vodacom refuses to take it back and cancel the contract all they want is their money for a faulty device they are happy to sell to the public.