etihad steeling miles and using excuse it not them

I used my miles in January and took 5 months to get nothing, they finally gave me back my miles and i placed my second order, they said they have tried to deliver it to me but my security camera shows noone attempted. Etihad has now stollen my points and demand i pay extra for the postage again. why should i pay for something they are lying about. NO DELIVERY WAS EVER ATTEMPTED. Security footage more reliable than the liers Etihad and there supposed merchandiser are.