Okay, so...you HAVE to DECIDE which of the 3 accounts you want to keep.
Also, it does NOT matter HWERE the accounts were CREATED, because you CAN login to any given account, from ANY given computer, so long as it supports a web browser.
YOu do NOT need the SKYPE application to log into your account, you CAN visit the SKYPE website, to login to any of the accounts, and also cancel them.
What i would do here is:
1- Determine WHICH SKYPE ACCOUNT I WANT TO KEEP. Make sure i have the proper credentials to login. (meaning i have the username, and password ***** THAT account)
2- Login to the accounts that i DO NOT want to keep, and request a REFUND, and let the representative of SKYPE know, that the accounts were made in duplicate as mistake.
3-Cancel the 2 accounts i DO NOT want.
4- Login with the ONLY account i WANT to KEEP, and update the account information with the proper user information.
All that make sense?