Has anyone had problems getting their money refunded by The Music Room?

I have bought from and sold to TMR on multiple occasions with no issues whatsoever.

Best we can do is speculate.  Resolving requires @tubes21 (the only with the authority) to contact both TMR and his bank to clear up the payment processing problem.  Otherwise maybe work out another method of receiving payment.

Agreed. Posting this on a public forum doesn't seem like the right move, yet, to resolve the situation or get more information. TMR's reputation is good and doesn't deserve even unintentional tarnishing, IMHO. 

I've sold a couple of amps to TMR. The transactions worked flawlessly. 

TRM is hoping this thread continues. Why? Just read the above positive testimonials. How many negatives?

OP Why not give us more details? As it stands now, this is a slam against them with little details or clarification. My speculation is that there is more to the story than presented to. 

I agree, at this point, without further information, this unfounded slam against TMR. I've had several successful transactions with them. As for shipping components, virtually every retail establishment I've ever dealt with required signature on delivery for expensive components, some will allow purchaser to choose no signature.