Greetings @parth!
Sorry to hear that the spell didn’t go as expected for you. But although the outcome wasn’t what you expected, it doesn’t necessarily mean that it backfired. Like Megan said, I think it’s pretty rare for a spell to “backfire”- especially if the spellwork involved was positive (as opposed to harmful Baneful Magick aka Black Magick).
That being said, it does seem like there was an issue with your circle 
. Not all witches choose to cast circles during spellwork, but those who do will likely agree that if you do decide to draw a circle, the circle should not be broken until the spell is complete.
For more information about magickal circles, I recommend reading the full Circle Casting FAQ in the Spells8 Circle Casting For All Guide. There is a lot of helpful information there for those who like to cast circles! 
To learn how to safely close your circle, check out the section called How to Take Down a Magickal Circle.
If you believe that your magickal circle is still active, taking it down now may help to bring a stop to any bad energy or strange things you are experiencing 
I would strongly suggest closing your magickal circle, @parth, if you haven’t done so already and see if that helps! Going forward with your spellwork, I would suggest not using circles or, if you do enjoy casting circles during spellwork, to always carefully cat a door in the circle if you have to leave- or better yet, not leave the circle until the spell is finished.
Good luck and blessed be! 