Instead of calling a plumber and spending a few hundred rupees on it, you can fix the issue yourself. Just keep this guide handy.
Pour a bowl of boiling water down the drain. This will break the soap or grease that is holding the clog together and clear the blockage.
2) Wire snake
Grab a wire hanger and unwind it to get a straight wire. Bend the tip with a pair of pliers and transform it into a hook. Use this hook to remove any clogged hair.
Pour some water near the drain to make it wet. Press the plunger into the drain, then using a flashlight, look down the drain and remove all the hair and other gunk with a wire snake. Pour some water and see if the drain is cleared.
4) Baking soda and vinegar
Pour 3 cups of baking soda and ½ a cup of vinegar down the drain. Wait for 15 minutes and pour 3 cups of boiling water in the drain. Use a wire snake to remove all the clogged hair and other gunk.