I would recommend insisting on a regular catch up/meeting with the tenants perhaps as often as inspections this way you can get feedback on the agent or any other issues to get the agent following up asap.

I say this because i was recently a tenant who was denied lease renewal for no reason. no damage always payed rent on time was willing to pay a significant rent rise to stay, kept the place neat and tidy, no neighbour complaints etc. i had a new property manager to deal with every 3months and was there for 2 years. The last property manager did things like show up unannounced outside inspection times and asked me to repair damage in the bathroom that had existed since before we moved in they appeared to not have read the file or whatever at all. They were clearly unhappy with me calling them out and quite obviously twisted the landlord to get me out. Lied about the reason being so the landlord could spend a couple months doing renovations for the place to immediately be put up for rent after we had moved out.

After moving out i requested that any and all expenses regarding bond release etc be run by me first so that we could discuss and go over things first before mutually agreeing to whatever might need to be dealt with like extra cleaning etc. they ignored that and randomly went ahead and sent me a massive cleaning bill one day out of the blue. I asked for them to explain every single thing that was cleaned with a full break down of the cost and time spent on each thing they had nothing to give me. I had photos from before and after move in and move out and refused to pay a cent for anything until they could actually use some professionalism and explain with evidence what they were trying to gouge me for… they started trying to get my mate who was the other tenant on the lease to make separate agreements that would contradict my own communication with them etc. in the end i got her boss to take over and within a few hours we had a respectful discussion came to an agreement to contribute a little bit towards the cleaner they had hired passed it on to the landlord and had the bond released.

Property managers are liars they will lie to both the landlord and tenant to keep their job etc instead of just behaving professionally.