Actually, the topic of Tawassul (using a means to seek Allah's help) is one of the controversial issues among Muslim nation that has not been understood in its due perspective, and which proved hostility and hatred among different groups.
Muslims are supposed to rely on the understanding of Salaf (Prophet and his Companions, the second generation after them, and the third generation after). These are the best generations as the Prophet told us.
I regret to say that only a few number of Muslims adhere and follow the way of Salaf regarding this subject while a lot of them deviated from the right way and fell into the stagnant pool of innovations and superstitions.