I also made my testament.. I keep it in the deposit box. in the testament I challenge my descent to come to travelling in my time... but still no responds
Were you specific about who you expect your descendants to be?
I ask this question because I have doubts about who would be permitted to time travel.
Again, I suspect, time travel will be restricted to very few select set of people limited to historians, anthropologists, military officer, and very much like the US's NASA, a handful out of a thousand trained chrononauts.
The second problem is whether or not your "testament" is compelling enough for them to visit you.
We know Newton, Einstein, and Hawking are important, but neither of them publicly or covertly have testified having contact with time travelers (from past, future, or elsewhere e.g. off planet).
Third, you assume your safety deposit box does survive long enough to reach some one capable of time travel.
Imagine a month before time travel is unrestricted, by government judicial decree, a disgruntle former employee in an act of arson burns the bank, and plans to escape through the
now legal option of time travel.