How to delete or restore blog? Whereas I forgot the account name and password I used when creating the blog.

How do I delete or restore a blog? And I forget the account name and 
password that I use when creating a blog. There is a comment that is not 
worth to see. I beg his help. There are 2 blogs that commented not happy 
for me. This blog name. Baiatdanijazahilmuhikmahsejati.blogspot.com. 
Majlisdzikirmachsuniyah.blogspot.com Please help

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