What specific services are you referring to? If there are multiple firms and the government competing then that really doesn’t sound like the situation I was describing.
Governments can also be sued though they sometimes grant themselves immunity. But utilities really can’t go out of business, can they? Generally they are providing what are considered essential services, so if they fail, the government will generally bail them out because they are the only provider and the loss of those services would be catastrophic. So there really is very little accountability. Just ask PG&E customers how much say they have in that company’s practices.
As far as government accountability, that’s what elections are for. Do you not have those in your country?