email address BDC

Good morning, 

may I have the email address of 

 BDC to ask them to active single-use for the room that you wish to have this option, because

It's something that isn't readily available with the Extranet but on request they add it.

Esperanza Beac…

I tried this yesterday and again today. They want to know the reservation number. But it doesn't take the number I used. Where? do I get the number they want?????

Isn't their a email address or telephone number I can use to contact them.

It is a real confusing and users unfriendly platform!