I e-mailed a request for an RMA to a company on 3rd April and, despite several further e-mails and repeated unanswered phone calls, I've heard nothing... until today when I received an e-mail apologising for the delay and blaming the royal wedding for unspecified delays, and assuring me of the best of their attention.
No RMA number, just an assurance
Of course, thinking about it, this company would quite likely be snowed under with work because of the royal wedding, after all the sell... model railways
Presumably that means "Don't expect any sense out of us until early May".