In case of qurbani through bank or any other organization there is a problem that they perform the qurbani as per their ease. It came to our knowledge that they keep on doing qurbani even after Ayyam-e-Nahr and Ayyam-e-Tashriq. In such a case, it is difficult to maintain wajib sequence. Therefore, the Hanafi Haji instead of depositing the money in the bank should either do his qurbani himself by going to slaughter house or if he is unable then he should get it done by his reliable friends and acquaintances and should not trust the token of bank etc out of precaution. However, if someone is so weak that neither he can go to the slaughter house nor he has any reliable source for qurbani then he may buy the token of bank due to compulsion. And he may do halaq or cut the hair after the time given by the bank. If he learns that his qurbani was done after the appointed time then no dam shall be wajib on him due to missing the sequence due to this compulsion.
Allah knows Best!
Darul Uloom Deoband