Yes, they are different. But you make it hard with abstract phrases like this> 1. I've been told. I was told. I can't think of an example where you say "I got told". 2. I was robbed. I got robbed "get" implies a physical action and a change of state. Here you change from not being robbed to being robbed. And the robbing is also a physical action. "getting told" sounds strange, as there is really no effort involved in the telling of something. 3. get lost = start being lost was lost = the whole time you were lost. It's a little tricky here, but with practice you'll work it all out.

Examples: I've been told that Italki is a good website[ formal] I got told told off last week.[ informal] Help! I've been robbed! [ formal] I got robbed last week [ informal] I've been lost in the desert twice [ formal] I got lost in Paris once [ informal]