Paying for the device i dont have.

I booked for my tablet for repairs in November two weeks elapsed and there was no collection of the device I called and was told that the courier had bad lock another 10 days elapsed still no collection I called and finally it was collected They received the device no communication on the progress for 2 months I decided to call them was told that insurance had bad lock Chesme took my numbers but he didn't call. I requested a call back from him still he didn't call whenever I call looking for Him its either he's off sick, in a meeting or busy with a call. I have been paying for 3 months without the device. I am fed up with fone choice I want nothing to do with these company.