If it's of any help, there's an ongoing thread regarding RS Components here
. From what I can see there, seems that a lot of people have similar complaints.
If you're UK-based, my understanding is that according to the Distance Selling Regulations (more info here
in a nice, easy-to-read format), unless you agreed otherwise with RS, then they were obligated to fulfill their side of the contract within thirty days from the day after you ordered, and if they were unable to do so they were also obligated to inform you that they could not and repay you within thirty days;
Performance of the contract
Unless the parties agree otherwise, the supplier must perform the contract within 30 days from the day after the consumer sent his order to the supplier.
If the supplier is unable to perform the contract within this period, he must inform the consumer and repay any sum paid as soon as possible (and in any event within 30 days), although it is open to the supplier and the consumer to agree a revised date for delivery.
A contract which is not performed within the 30 day period shall be treated as if the consumer never entered into it, but the consumer will still have remedies for non-performance.
If a longer period than 30 days is required then this must be clearly stated in the supplier's terms and conditions and the prior information. The supplier may perform the contract by substitute goods or services of equivalent quality and price if the contract provided for this possibility and the supplier gave the consumer the prior information in the appropriate way.
May I ask what payment method you used when you paid via PayPal? If it was a credit card, then you may still have some recourse via your credit card provider.
Actually, fotonick clearly mentions RS twice in his post.