Ruby Kling

Over the past 3 days January 04, 2012 till January 07, 2012, I placed several orders on Marketplace that got a "delivered" state and an invoice and charged my account but the items never reached my inventory. Most of the items were cheap items, like bikinis or body oil but the sum of the charged amount of the missing items is about 570 L$ or more. While some items arrived and others not I found out that always one complete order is involved. If one Item in an invoice has been delivered, all other items in this invoice have been delivered as well. If one item in an invoice has not yet been delivered, all other items in the same invoice, regardless of merchant or price, have not been delivered. Freebies are affected as well. Yesterday I started to write to the sellers inworld, but so far none of them answered, resent the item or refunded the price. It makes me rather upset to see that Marketplace is unreliable and nobody cares. Please tell me if I do something wrong. During the period mentioned above I never had set my account to busy nor I was under rlv restrictions or whatever could block the delivery in my imagination. Of course I already searched for the items in my inventory and I also cleared the cache. After more than 72 hours I assume that things should be here. Any idea what's going on and how to proceed? I'm tired to deal with this kind of issues and surprised that Linden Lab is unable to do a better job. As a result I WILL NO LONGER USE MARKETPLACE for other than reference before I can be sure it's reliable and not wasting my money.