The report is the seventh that Ofcom has produced and it logs complaints about broadband, fixed telephone services, Pay TV and pay monthly mobile services.

BBC: Orange tops broadband complaints chart

Most are embracing the technology and will therefore gain some revenue from it but the fact that the prices for VoIP are much lower means it will not be a cash cow in the same way as fixed telephone services have been in the past.

BBC: NEWS | Technology | Internet phone calls on the rise

Telephone services, both fixed line and wireless, have also been damaged.

ECONOMIST: China