Did you try posting questions in the forum? Maybe we can help.
You can not delete or merge accounts.
You can try to clear all of the information in your TurboTax account for this year but you will need to Contact Customer Support to have an account deactivated for more of a resolution.
https://ttlc.intuit.com/community/using-turbotax/help/how-do-i-clear-and-start-over-in-turbotax-online/00/26444