Numerous billing mistakes. Endless waiting time on the phone when trying to report errors. When I did manage to speak to a person they didn't know why or how the errors had occurred. You can't complain to Plusnet. They call a complaint a 'question' which adds insult to injury when trying to resolve the mistakes that are made. The facility to open a 'question' on Plusnet's website is so embedded that you lose the will to pursue the complaint. The customer gets a quicker response from Plusnet when complaining via Resolver than complaining directly to Plusnet. Exasperating and exhausting