How to file legal notice

Sir Maine mere ek relative Ko bank se gold loan le ke paise udhar diye the uske badle unhone unke sallary account ke cheque bhi diye the Lekin ab wo paise dene se inkar kar rahe hai....aur agar Mai unka cheque lagau to unpar 138 ke tahat case kar Sakta hu kya?

I’m currently in USA for personal commitments. I’m a director in LLP registered company. I want to quit that. Should I be present in India to quit the company? Other 2 directors of the company are not accepting my resignation and threatening me that they will dissolve the company .

I have invested an amount of rs. 20 lacs with a local builder in his firm with below conditions: 1. The builder will return my invested amount with a certain profit of rs. 8 lacs within one year. 2. The builder will include me as his firm partner in the land registry which he is going to buy. 3. The builder and I have signed a MOU and partnership deed for the same. He faked the actual price of the land and valued the land just double of its real price. Now after 1 yr I'm asking him to refund my money with profit, he prepared a partnership dissolution and asking me to sign it and giving me six months post dated cheques. I'm not sure whether or not I should sign the partnership dissolution just by getting those pdcs. Please provide me best possible solution to recover my money. PS : I have all original documents (MOU, Land registry) but I dont want to go for civil suit as it takes years.