Why are real estate agents not driven to rent and sell property in Pretoria?

We’re in need of a rental property or we are also keen to buy but when enquiring on a house, estate agents don’t reply. We need to almost beg them to let us see a potential house? I’d think having a client willing to pay is something to work for? In my previous town, estate agents were a nuisance, constantly calling and following up after viewing a house, now I miss that..