What brings you down but never up?

I am a five-letter word and comprises two different vowels and three same consonants. I am so strong that I can spoil your entire work.

Can you find out who am I?

In a Society, there are over 100 flats.

Flat 1 is named the first flat.
Flat 2 is named the second flat.
Flat 3 is named the third flat. And So On.....

A visitor decides to walk through all the flats, and he finds all the flats except flat 62.
Anmol later founds that the locals of the town have given it another name.

What is the name of the Flat?

It has a long neck, A name of a bird, Feeds on cargo of ships, It's not alive,

What is it?

Give it food and it will live; give it water and it will die.

I have a head like a cat and feet like a cat, but I am not a cat. What am I?

I cannot talk, but I always reply when spoken to. What am I?

Decode below three cipher riddles:

26 L of the A
7 D of the W
1000 Y in a M

Six people park their car in an underground parking of a store. The store has six floors in all. Each one of them goes to a different floor. Simon stays in the lift for the longest. Sia gets out before Peter but after Tracy. The first one to get out is Harold. Debra leaves after Tracy who gets out on the third floor.

Can you find out who leaves the lift on which floor?

The Little ant seems to be always confused. Do you know why?