No, you are not safely protected. You need to complete the series.
There is no vaccine for hepatitis C.
There is no harm or benefit from giving hepatitis B vaccine to someone with hepatitis B.
Hepatitis C and hepatitis E have no vaccine to prevent the disease. Although there is no vaccine to prevent hepatitis D, you can only get this type if you're also infected with type B. Therefore, hepatitis B vaccine indirectly prevents hepatitis D.
Since Hepatitis B vaccine only protects against Hepatitis B, the only thing the vaccine controls is Hepatitis B infections.
The series should not be restarted; resume the series where it was interrupted.
It means that the patient has not been exposed to hepatitis B (ie is not and has not ever been infected with it) and that the patient has not received a vaccine against hepatitis b.
There is currently no vaccine available against Hepatitis C. There is research going on to develop one but it will take years at least before one is developed.
Once you have had Hepatitis B there is no need for a Hepatitis B vaccine. The vaccine is only effective for those who have not had the disease, it is used to prevent a hepatitis B infection.
For Hepatitis A, it is usually just called "The Hepatitis A vaccine" but is marketed under the brand names Havrix and Vaqta. Hepatitis B is marketed under the brand name Comvax. There isn't a vaccine for Hepatitis C.
It is unlikely. Hepatitis A vaccine is a two-dose series.
There's a Hepatitis B vaccine that can prevent it.
There is a vaccine for it.