No Reply / No call back - Poor service from Agent / Owner

Tried phoning the Owner / Agent over the course of 3 days to arrange a viewing of a rental property. Sent this agent an email stating my interest in a property listed on a rental property website. Did not receive any reply, called the first day no answer - called again, Agent said that she would phone me back after reading my email. Agent did not phone me back, also no reply on my email.

Phoned the agent again the second day - twice no answer, received an SMS from the Agent stating that she would phone me back , she never did. Sent Agent an SMS asking when I could view the property - did not receive any reply.

Phoned the Agent on a third day, twice - sent another SMS... No reply on my SMS - No Reply on my email - agent does not take my calls... I am not sure why I am being treated this poorly or if this is the general level of service from this agency.

Will definitely be using a different estate agency - if it is this hard just to view a property, then I don't want to know what will happen if there is an actual issue.