Architect Archive

In my early days in the game I had a small mineral harvester and deleted it, that lot has never opened up again for me. The harvester is still taking up a lot even though it is deleted. I also had this problem with a small house, I went to sell it, so when I destroyed it to reclaim the structure I was invisible all of a sudden. I still managed to trade with the guy and get the money. I relogged to fix the invisible problem and was warped to coords 0,0 without the money and my 2 lots still used up on a house that didnt exist anymore. So now I am forced to use 7 lots instead of 10. Anyone know how to solve this? I've submitted a ticket a week ago and still nothing.....