Judaism does not teach that Moses is the "only teacher", and the concept of a "prophet" in Judaism is very different from that in Islam. While some Rabbinic texts do in fact also call Moses a prophet, it is in an analogue sense; the prophets of Judaism, strictly, are those whose writings we have in the bible.And the Jews say that Moses is the only teacher, and denied that he was a prophet and also denies Jesus is the Messiah.
As of Jesus being the Messiah, yes, Jews do not believe that, nor do Muslims, they do not even know what the word means.
You do not have solid proof that Moses and Jesus once said that religion taught by them is complete. If not, please provide evidence verse of the Torah and the Bible that Moses and Jesus, saying their religion is perfect and complete.

Honestly SAM, do you think we are all stupid here? Verses are "proof"?
I do not have proof you have 10 fingers, does that prove you have 12?
In Christianity, Jesus is the "Alpha and Omega", and the Christianity does not accept "improvements" after God himself reveal his purpose in Jesus. There cannot be any further "prophets" after God himself walked among men. But that is also not the topic.
Judaism to not make a claim to be "perfect", and it still expects a Messiah. However, they are very clear what this Messiah should be and they are also certain it has nothing whatever to do with the murderous paedophile from Arabia.I am the Alpha and the Omega, the First and the Last, the Beginning and the End. Rev 22:13
SAM, the burden of proof is on you: you are the one who claims that Mohammed "completes" the teachings of Moses. So give an example.