No Feedback

I took out a new contract on Saturday 09/04/2016. I took a dual sim tablet. As by all cell shops, they set up the device in store. So the guy put the sim card in slot-1 and it did not read. So he put it in slot-2. This is my first dual sim device, so I didn't realise what he done. So I took the device, but returned it less than 2 hours the same day. But according to them its an out of store return! Even though the guy that gave me the faulty device admit that he saw this tablet was faulty. Hes excuse were that the tablets does that sometimes. So I canceled this contract because of the poor quality of the device and poor service. But I kept my calm and told them to rather get me a different make. The sim and connection fee has been detucted on monday already even though I'm sitting without a device! Its day five and I had to call them yesterday to get some feedback...So why should I be the one waiting for a tablet that was faulty when I received it,and the guy that gave me this device knew its faulty. Plus I've already payed for somthing that I don't have...