Interest and Gambling

Body corporate allocating insurance for the home in monthly levies

Q: I have recently moved into a house which forms part of complex and is run by a body corporate. The house belongs to my wife in a Family Trust, however I pay the expenses to run the house. I have just recently found out that the monthly levies I pay includes a portion which is allocated to insurance for the home. I was unaware of this and thought that the home was uninsured. 

Please advise on what I should do ?

Giving a loan on interest

Q: Two parties want to enter an agreement: Person A wants to loan money to Person B. 

The amount is marked up by 10% and the repayment is over a fixed period e.g. 4 years. 

If there is a clause in the agreement to say that if you pay by 3 years, you will get R2000 back. 

Is the rebate of the R2000 clause permissible? Is the allocation of marked up shares permissible?

Accumulating interest money with the intention of using it later

Q: Previously I should donate any interest accrued monthly. 

My father said I rather keep it because he will be buying a big property within a year or two, and we can use the interest for paying the property taxes, municipal rates, etc. which are exorbitant. 

Would this be okay - to withhold the interest for sometime with the intention of paying taxes?