What do you think of real estate agents?

Anyway, I will not contact you after buying a house, and the after-sales service is very poor. Buying a house is a big deal now. I want to find a professional intermediary and have a lower intermediary fee. This is a dilemma. If you don't want to be cheated, you can only find a bigger intermediary. After all, the agency fee of 20,000 yuan and the house of 2 million yuan are more important. Finding a small intermediary is very troublesome, unprofessional, loan, purchase restriction and so on.