Taking order they cannot fulfill, and now the customer has to sort out their mess

Leroy Merlin at it again, taking customers money, and not delivering or refunding. If you are lucky to receive delivery it is ALWAYS late by at least a week, and incomplete. They send an email "notifying" you of the order cancellation, but do not state what items. I placed the order online on 26 August, and paid R150 for delivery. in the order confirmation it stated order will arrive by 29 August, on 28 August I received this email indicating some items have been cancelled, but no indication on the items, the e-mail also state that the refund is already on its way. It is 13 September now, and I'm still waiting for the refund! Some items in the order were delivered on 5September (way after the expected delivery date), but the order is still incomplete and items missing, and no refund received!