As you know, Blizzard has fixed the normal method which only required a transfer. This is the NEW method and works 100%.
This will dupe mounts from one persons account to another, in the next week or so I'll post the REAL name change method, free of charge. This way you can name change the account you dupe mounts from and merg them onto your account.
Account Mount Dupe Exploit
Step 1: Create a battle.net with the same details as the account you want to dupe mounts from.
Step 2: Create a battlechest on the account you want to dupe mounts from (SoR will not work 100% of the time)
Step 3: Trade a level 1 on the newly made Bchest a ton of random mats (Non valuable ones are fine) just makes it more believable.
Step 4: Call Blizzard (From skype is best but it really doesn't matter, it's just free from Skype) and tell them you want to move your bank account to another battle.net (The bank account being the new Battle.chest) they may ask a few non relevant questions like credit card used, or SQA for both accounts.
Congratz now your new battle.net has all the mounts.
Account Dupe Exploit
Step 1: Create a battle.net with the same details as the account you want to dupe from.
Step 2: Create a Bchest on the OLD Battle.net and Put a SoR on the NEW Battle.net. Log into the Bchest on the OLD account and make sure everything is there.
Step 3: Call Blizzard and tell them you want to move your account to your newly created Battle.net (The one with the SOR)
Congratz now you have duped everything (Please note PETS DO NOT TRANSFER TO THE NEW BATTLE.NET)
Here are some tips - Do the dupe method TWICE in TWO days time, and THEN call again to get them to merg your original/main to the original battle.net to get your pets back and sell the 2 NEW battle.net dupes.
OFFICIAL NAME CHANGE METHOD COMING SOON! I JUST WANT TO ABUSE IT BEFORE I MAKE IT PUBLIC!
*PLEASE DO NOT PM ME ABOUT ANY OF THIS,THIS IS SIMPLE ENOUGH TO WHERE I WONT EXPLAIN THINGS IN PMS