Taking the money owed to one by one's father from his money

Q: My dad owes me some money, however he thinks that whatever money I give him, he doesn't have to pay me back. However I am the one that looks after his money fully. He keeps his savings with me also. Would it be permissible for me to take my money without telling him, he will not realise that I have taken my money as it is a very little amount. If I ask for my money back he may get upset and offended.

Forwarding videos and filthy jokes on Whatsapp

Q: Whatsapp has become a part of our lives undoubtedly. I have recently been through my husbands phone and became distressed immensely upon finding filthy jokes and videos which he forwards to a friend.what troubles me even more is that they are ulama of deen which we respect. Please give advise on the following How do we use it correctly? What is the status of these so called ulama groups. Do I have any reason to be upset or not?

Retirement fund

Q: Our company has taken out a Sharia Compliant Retirement Annuity for the staff. The company pays the full contribution and it is included as a benefit on our annual salary. Staff have a choice of also contributing extra to this RA , some contribute an extra 3% to 6% of their salary to the RA voluntarily. I do not contribute anything extra towards this. (from next year it is going to be compulsory for everyone to contribute extra from their salaries) The rules of the RA are , if I leave the company I can cash out the RA but will only receive 60% of its value because 40% will go as taxes. Or I can reinvest the whole amount. Please advise if I have to pay zakaat on the value of this RA?