Dell India — Purchased new All in one PC which was not sealed

Address:

Advance info distributors private limited, 16 vaishali, pitampura, delhi

Today i have purchased, dell insp AIO 5400, i3 from advance info distributor private limited which is situated in 16, vaishali, pitampura, delhi. Which is also an dell exclusive store.
They have sent me used PC, which was not sealed from one side, they think customers are fool, they will not notice it,
Hereby, i request the authority to take necessary action on them, and ask them to give me new sealed pack.