I'm certainly not going to buy anything from RS. The complete lack of customer service, unnecessary drama, the bullshit shipping charges ($38 for a PCE? are you insane? How is this a "deal" in any way?), and the obvious bait-and-switch ordering tells me that this business has bad management. And Alex, your empty threat of e-lawyering last month did not go unnoticed, FYI.
There is a legal term; "cure". If an order is messed up, It is the obligation of the seller to "cure" the order to the owners satisfaction. By this, it means compensatory restitution for missing items of the order, compensatory shipping. In some cases, usually at the digression of the owner, freebies are included to make sure the the customer comes back. (ex. A trucking company only delivers 3 trailerloads of lumber, when the order called for 4, the seller, bound by contract, is legally obligated to provide the 4th load of lumber by the specified time on the contract, or risk being in breach of contract. He ((or she)) must take all necessary actions, at expense of the company, to fulfill the contract. The business owner, in anticipation of breach of contract, then takes a loss to save face, or risks legal discipline at the mercy of the Buyer.)
So japanesepeso, based solely on your actions on this forum, you're not to be trusted. If you were my employee, I would have fired you long ago. You should be groveling at the feet of your customers.
Arkhan, chargeback this toolbag with Paypal, or file a payment dispute with your credit card company. Or did you pay with a Money Order?