The real estate agent won't take our offer for a house, is that legal?

We had a look at a house and we wanted to make an offer and the real estate agent said we are both wasting out time, is that allowed? What should i do?
Update: We had a look at a house and we wanted to make an offer and the real estate agent said we are both wasting out time, is that allowed? What should i do? They don't even have my name or anything. The house is for sale for $319000 but we offered $290000.
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