Telco complaints to the TIO as a proportion of services in operation dropped 3.1 per cent in the July-September quarter to 6.2 complaints per 10,000 services in operation (SIO).
This represents a 16.4 per cent increase on the 5.5 complaints per 10,000 SIO during the same period in 2015.
The July-September reduction was driven by improvements in the number of complaints per SIO for both Telstra and Optus.