@Joshi0
The agent you spoke with is talking nonsense. Even in Airbnb's own language, deactivating and deleting accounts are two very different procedures.
However, as a rule, Airbnb will always try to persuade you to deactivate - so your details remain in their system - rather than delete. I won't go into detail on the whys and wherefores of this, but suffice to say, each and every host on the platform has a nominal value on their head, that counts towards the company's $38 billion valuation - particularly important with an IPO on the horizon (now likely to be 2020, rather than 2019)
This is the information you need..
https://www.airbnb.ie/help/article/240/how-do-i-deactivate-or-delete-my-account