hey yash,

Haldia is an above average college for btech studies.
You can check its ratings and reviews and below:
HALDI https://www.careers360.com/colleges/haldia-institute-of-technology-haldia/reviews
Heritage does not differ much with the rating and ranking as compared to Haldia.
You can check the Heritage reviews and ratings below:
Heritage https://www.careers360.com/colleges/heritage-institute-of-technology-kolkata/reviews
Now you can decide wisely based on location, fees etc.
Good Luck.