Consumers and small businesses made over 150,000 complaints to telecommunication companies in the past financial year, the highest number in four years.
Australia's telecommunications ombudsman says complaints about internet services increased and became, for the first time, the highest source of issues.
But grievances about landline and mobile phones also grew.
Australians are getting highly frustrated with their technology.
The number of formal complaints to telecommunication companies in the past financial year was the most since 2012/13.
In its 2016/17 annual report, the telecommunications-industry ombudsman says most of the complaints from consumers now relate to the web.
Grievances about internet services have more than doubled, most of them related to delays experienced by people wanting to connect to the National Broadband Network. (NBN)
Billing and payments, faults and customer service were the other most common complaints about internet services.
While the NBN is playing a big part in the rise in internet-related complaints, ombudsman Judi Jones says the total rise can be attributed to people's overall reliance on the web.
