Hello and welcome to e health forum.
Hepatitis C infection via blood stained razors can occur, only if your barber has used them on other people before using it on you, and the person before you turning up to be having Hepatitis C infection, and with high titres of virions in his serum.
Such issues are less likely, as most barbers now a days, do use new razors on customers and as a businessman, a barber would not like to harm his customers.
In addition, Since most of the serology tests have turned up normal, there is no need to worry.
About your liver enzymes, they are mildly elevated just above the reference range, and they could be due to the fatty liver and not due to hepatitis.
In cases of hepatitis, the enzyme levels are elevated above 500 units (At least).
Hence you just have to relax and stop worrying about things that happen rarely.
I hope this helps to relax your mind.