TEANTS REQUEST WORK BUT DONT ALLOW ACCESS?!!!

[Frankie Felix]

I just bought a 12 unit complex in Studio City, the previous landlords were not keeping up the property. 

When I took over I was bombarded with maintenance requests, which I told them "Okay, I will put this is in, and I will have someone out here tomorrow or the following day between 9-4" their response "Can you do another day, in the evening?" So it's frustrating they want to be present, I had an HAVC tech check out an AC, he knocked on a tenant door, he told her I'm here to check the AC, she responded "I don't have an appointment with you, you may not come in" i had texted her about the AC two days prior.

Is it fine if I ignore complaints, from those people who request things but then don't want me or my vendors to come in?

This is a non-rent control property... should I just do a hefty rent increase to kick them out.. or just give her a 60 day notice to move?

How to deal with tenants that do not want you to enter without them being present?