The 224% rise in complaints is "worrying" and customers should shop around to find a better deal, the Government said.
A Department of Energy and Climate Change spokeswoman said:
The rise in the number of complaints is worrying.
We would advise consumers to shop around and switch to find a better deal, whether on cost or customer service.
More top news
The mother of a 21-year-old woman who died after taking potentially toxic diet pills has warned others to avoid using the drugs.
It's a case of mistaken identity as the actress is forced to differentiate himself from an Irish activist sharing her name
Jeffrey Okafor is accused of murdering 19-year-old Carl Beatson-Asiedu outside a nightclub in south London in 2009. His trial began today.