I have had experience doing this a half dozen times. I have never had a problem with telecharge, they have always been great about it. It is much easier to exchange tickets within the same show rather than try and get a refund and use the money to buy tickets to a different show. Since you are just asking to switch the date for tickets within the same show, it should be easy.
Typically what happens is you call and say you would like to exchange the date of the show for a different date. They will say that they have to call the box office of that particular theater, and that then they can issue you a full refund and assist you over the phone in picking out new seats on the new date of your choosing. They will put you on hold while they call the Belasco box office to authorize a refund, and then they will get back on the phone and assist you in picking out the new date and seats.
Have the new date and the specific seats that you want ready to give them, it should take about 10 minutes in total. I am sure you are probably the 20th or 30th person to call and request a date exchange for Hedwig since the extension announcement.
Updated On: 2/6/15 at 01:15 PM