Okay I'm gonna try and clear this up for you. By the info in your previous post, which is ALL I have to go by. You said you tell him VERY firmly and give him a light spanking, now to me when I got spanked by my mum, she was hitting me. , merriam dictionary says something to the effect of "spank": to Strike, to aim to deliver a blow on the buttocks with the open hand, now strike is partially defined as come into contact forcefully..ie..to strike at or on as in "hit". So this is why I said stop hitting him, maybe I should have said stop striking him. Sometimes English there and english here is diff. Either way dogs should not be Struck. Next point: You said you dread coming home to find it destroyed "again", that seems to me like it is repaired and then destroyed "again". Right after saying you dread coming home, your next sentence you say, you tell him bad dog etc...put in this context this is where I read you leave, come home and spank him. There is nothing that suggest you previously have caught him the act and are trying to fix the situation.
Try to use an old towel and sew it to the old bed to try and seal the hole, but he is having fun ripping it apart which tells me he is bored, not enough exercise, a tired dog is a good dog, they sleep. If you only leave for an hour or 2 for dinner and store you will still need to exercise him, dogs will not play to the point of exhaustion, it's a survival instinct, they will play get slightly tired and rest, even if for short spurts. It's up to us to wear them out. Most toys are interactive they need 2 to really enjoy them. I am trying not to address the other posts, just the original.