Maria,
The term, toll-house, may be from a later time, but the belief in judgement of our souls has always been the teaching of the Church fathers. Many Orthodox saints have described the battle of the demons over the departed soul. I'm just wondering what your specific objection is since there have been many explanations from Greek, Alexandrian and Egyptian Orthodox saints although you think it is only a Russian concept. I believe that the Russians learned it from the Greeks so they are just passing on the teaching. If they decided to give it a certain name to explain the complexity of the soul's situation during this trial, it was probably due to the fact that our created minds can not explain such a world beyond our understanding and therefore we make analogies. The holy fathers of the Church didn't give it a name; they just described what was happening, but it comes down to the same thing... there is a judgement to face.
And in addition, the Orthodox Church has a clear understanding of what happens to the soul after this life. The Church has developed prayers for them and specified certain days that are significant from the time of repose: 3, 9, 40. I don't know if that is specified in the Seven Ecumenical Councils, but it is certainly an established tradition of our faith and we honor it.
These are just my simple thoughts.
In Christ,
Joanna