Can you post a picture of it?

In this picture, on the left is of the mint i bought from a supermarket on 26th Feb and repotted on 02 Mar. On the left are 9 cuttings that rooted in water on 02 Mar and were potted on the 12th (i think?). The plant on the left is a darker shade of green, although not very visible in the picture... Quite a number of leaves on the big plant has curled up, I circled a couple of more obvious ones in red. Below is another picture that might be clearer.... whats happening to my Minty? :( :( :(

Overall, they're looking pretty good.

How often are you watering? Mint likes water, but you should let the soil dry a little (think paper towel very wrung out, not bone dry and cracking) before watering again. Stick a finger in the soil--sometimes the top looks dry, but just underneath it's quite wet. Indoor pots, especially when the temp is cooler, take a while to dry.

I water daily, but not too much water. It wouldnt seep out of the bottom of the pot. And I pour the water at the base of the plant, as near to the stem as I can get without disturbing the leaves too much.

The soil is usually slightly (very slightly) damp on the surface when I water. I dont stick my finger in the soil because I have pretty nails... :(

Too much water. Indoor pots should not need daily water, even if it's not much. Let the surface dry.