Myriad Arabic problem

I'm posting a message here in the hope that someone in a position to do something about my problem might read it. Nearly 2 weeks ago we purchased Myriad Arabic Semibold. When I download it I get Myriad Arabic Bold. I started a chat session with an Adobe rep and they said I need to call customer service, which I did, and they then opened a support case 0208733923. The response in that was that the font we have is semibold but it's called bold, and they closed the case. I think the reason they think that is that the Adobe store for Myriad Arabic Semibold does indeed say

Postscript File Name:
MyriadArabic-Bold

MAC Menu Name:
Myriad Arabic Bold

Windows/PC Menu Name:
Myriad Arabic Bold + bold style

However for Myriad Arabic Bold it says

Postscript File Name:

MyriadArabic-Semibold

MAC Menu Name:

Myriad Arabic Semibold

Windows/PC Menu Name:

Myriad Arabic Semibold 

So it seems your system has got Semibold and Bold confused. I double-checked the Myriad Arabic "SemiBold" we downloaded with the Myriad Arabic Bold that comes with CS6 and they are indeed the same fonts. I rang customer service again, who opened another case 208751283 and asked me to outline the problem again, which I did, but the response was to tell me to contact technical support as it's a technical problem and close the case. I've spent around an hour today on the phone trying to get through to someone again without success.

The result of all this is that nearly 2 weeks after the original order and hours of my time we still don't have the product we ordered.