Argos complaint: Argos cannot deliver

My wife purchased an American style fridge freezer from Argos on the 28th of March and was promised delivery of the appliance on Monday the 4th of April but when the appliance was delivered it was damaged at the rear possibly by the fork lift used to load it onto the lorry. The appliance was sent back as damaged and a new delivery date of the 6th was arranged. On the 6th the drivers appeared with exactly the same fridge as what was sent on the 4th and it was ly returned as damaged. Whilst on the phone to their customer service I insisted that any re-scheduled delivery had to be inspected before sending it and was told this would take a week and they would try and deliver on Tuesday the 12th of April, and they would give some form of compensation for messing us around. When no appliance had appeared by 5pm on the 12th I called their customer services to find out that the inspection had revealed the fridge was damaged and that they needed to get a new one from an different warehouse and it would be delivered by the 25th of April, but nobody had informed us of this. This was unacceptable to us and we demanded and full refund back to the methods used to pay, i.e. £1000 worth of Nectar points and £500 credit card. Argos are now stating that they can’t refund the nectar points and have issued us with £1000 of Argos vouchers. To say we will never shop at Argos again is an understatement so we’re being held hostage by Argos for a £1000. And no mention of compensation either.