I'm an owner and can I just say that sometimes its not the agent but us that drags our heels. We have had some annoying tenants who have complained non stop about everything. I put my foot down when the tenant complained about the leaking kitchen tap ( ps not WE pay for the water not the tenant) I saw the "leak" and it was minuet so we said no, ( we had it professionally looked at too - he agreed- we did get it fixed when they moved out). We also put our foot down when they tried to claim cost of replacing a lightbulb ( as I had literally left a dozen at the property as spares if needed and had recently had them ALL replaced anyway )
Anything safety wise we get fixed ASAP but anything "cosmetic" we will explore options for a week or two.