I don't read that as saying there's only one tower that connects with Kendall.
I don't how to search for 2014, but there are a number of towers now that cover the area.
Limiting myself to the nearest Telstra towers (IMO the foster parents used Telstra phones) the nearest towers to Benaroon Drive, in order, are these:
12 Comboyne Street Kendall (Kendall shops, near the post office)--small cell only
Lot 39 Grey Gum Ridge Road Middle Brother
12 Hoschke Road West Haven (WH is between Lakewood and Laurieton)
And the nearest Telstra towers to the Lakewood shops are:
12 Hoschke Road West Haven
2 The Boulevarde Dunbogan
12 Comboyne St Kendall--small cell as noted above
Jolly Nose Hill Camp Ridge Rd Queens Lake State Forest Jolly Nose
Lot 39 Grey Gum Ridge Road Middle Brother
Radio Frequency National Site Archive (The P icon on the left side means proposed--so I haven't included those locations.)