When does iddat of talaaq commence?

Q: I've been separated from my husband since january 28th and have only received my talaaq papers in march. I recently received a proposal and wish to persue it. I am sterilized and can't have babies. Can you advise me on when my iddat commenced? Is it from the time I physically / literally separated (28 january) or from the time my talaq papers arrived? 

Seller claiming more than the agreed upon price

Q: A certain person owned a property that his friend wished to buy from him. On seeing the land, his friend offered him R1.2 million. He told his friend, “I don’t know the value of the property. If the value is more, you must sort me out.” After a week passed, the owner still hadn’t checked the value, but concluded a deal for R1.2 million, even making out a contract and signing the papers. A few months later, the initial owner learnt that the value was R1.5 million. He now wants to claim an additional R300 000 from the seller. Is this permissible?

Solution for financial problems

Q: I am asking for help that my father needs. Since years he is not well financially. He tried everything he could but debt keeps increasing. He works day and night to look after his family but he doesn't succeed. Few years back he escaped from a big car accident, later few years got a new car and he had been assaulted and injured badly, recently while driving his car suddenly set on fire and exploded but mashallah he is well. Now his debts keeps increasing. I am his son and I am really worried about him. I would really appreciate if mufti saheb can help.