I left company within training period (3 month) , due to personal reason. That time I didn't need anything from company, but later on they asked me X amount of money and sent me legal notice saying i didn't left properly or served some notice , Ok , accepted, i gave whatever they wanted, paid X amount(basically the three month salary they paid me all returned ) and also told since now Closure is done , and i have done as you asked, you also do your part and give me the leaving letter then/experience letter etc .