Provision of interest money, Hajj with interest money and giving Zakat to Sayyed family 3469179447

A government-employed woman gets some pension money at the end of her job. With which he had the intention of Hajj. But the treatment of his ailing old mother, which his brothers had done before, after the death of two brothers, the other brother and the rest of the sisters are not so capable. So he bought savings certificates with his pension money and paid only the interest money as medical expenses. The woman's mother is Syed Banshiya. Now the question is:

1. Thus, what does the Shari'ah say about paying medical expenses in the interest of savings certificates?
2. Is it necessary to perform Hajj after breaking the savings certificate (after the death of the mother or before it is resolved)?
3. Is it possible to give Zakat / Sadaqa to the people of Syed clan? 4132779278