String Bet?

[KJL]

I was at a home game the other day, when this hand came up. Basically, it was a heads-up pot on the flop, between the host and a new player. The host bet $10 and the new player said; "I see your $10 and raise you all-in". Now the host was semi-bluffing and didn't want to be raised. He called a string bet on the new player. The new player said it was acceptable to say; "I see and raise" but not "I call and raise". Nobody was really sure on the correct ruling but, we decided that we would give the new player the benefit of the doubt here. Just wondering the correct ruling.