Parents always angry

Q: My parents are always angry with me. If I listen their order then also. They always hate me. Is there any Dua or anything else which can help me? Please help me. I am very sad. This is from few years before everything was Ok.

Sayyid taking zakaat

Q: A father who is not allowed to accept zakaah (due to his lineage) but due to him being unemployed and barely getting by he accepted some zakaah hampers and money. Is the hampers that he accepted halaal upon his children?

Mazi on one's clothing

Q: There were very small tiny spots of madhi on my undergarments (very much smaller than the excusable diameter) and when I make istinja the front organ is wet and touched the area but nothing got onto me so as the impurity was of excusable amount can I regard myself as pure even after the wetness from my body touched that area?

Making a mistake in the tasbeeh of ruku' or sajdah

Q: In salah if I make a pronounciation mistake in sajda or ruku while reciting the tasbeeh first time or second time and if I correct it in the third time, will the salaah be still valid or the moment I make a mistake in sajda or ruku the salah becomes invalid. If the mistake happens in sajda or ruku, if I correct it the total tasbeeh becomes 4 times and in other sajdas it will only be 3 times. Does this difference effect the validity of salah and how to correct myself when I make mistake in sajda.