Too = more than enough = good amount
Too = usually bad enough = usually good
It is too (adjective) It is not (opposite) enough.
Understand with opposite adjectives here.
Practice here.
Make sentences here.
Making a Return Dialogue:
Customer: I need to return this (item).
Customer Service Representative (CSR): Is there something wrong with it?
Customer: Yes. It is …
CSR: OK. Do you have the receipt? Did you pay with cash or credit?
Customer: Here is the receipt. I paid with…
CSR: OK. I will ...refund it to your card/...give you the cash.