Agree to a certain extent.
Funds, like any other securities traded on the market, are
subjected to market forces and risks. With the exception of govt
bonds or F.Ds, one should not seriously expect a "guaranteed" rate
of return when investing in equities of that nature.
That being said, the lady agent did not exactly tell you the full
story but she can always refer you to the fine print on the
contract/agreement which you signed on . Sadly, not much people
bother to read the fine print and take the agent's word at face
value..
And almost every sales-line personnel never tells you the full
story, no matter the industry their in. Can you imagine how they
can do business if they did? I.e. You wish to buy a white T-shirt
but the sales person tells you the "full story"/"truth" and says
the T-shirt's actual cost-value is $5 to the company but their
selling it to you at $25 to make a profit, its dyed with bleaching
agents that "might" irritate your skin etc etc.

Edited: Typos.