When broker isn’t interested in selling the property

Hello,

I'm facing a situation when a broker behaves strange. Two weeks ago I sent the letter of intent to purchase multifamily property asking a broker to respond in 7 days. Broker didn't reply. In 10 days since I've sent the LOI I called the broker. He told me that he didn't see my email that's why he didn't send it to the owner of a property. He apologized and promised to do it asap. 10 days have passed since my call. There is no answer. Do you have any ideas why broker isn't interested in selling multifamily property?

Thank you

P.S. There weren’t conflict situations.