I Quit due to toxic work culture and no reimbursement

Hi I joined a small design studio in Mumbai , they didn’t even send me an appointment letter only a offer letter that I signed, after 6 months of no problem and hard work the boss calls me and says that my performance is very less and that she is extending my probation without any email or written proof, in the seventh month I had to take a break and asked for a 10 day leave for which my salary was greatly deducted (the salary got deducted if u are late everyday also but it is no where mentioned in the terms and policies of the company) , my reimbursements from travel for the company has been questioned and withheld for 3 months now it is more than 10k in value, I put my resignation before 20 days and there was no reply on email but just verbal communication that I have a 7 day notice period, on the 3rd day the boss told me i could stay longer if u prove ur good, I worked extremely hard for 2 weeks along with travel and nonstop working (weekends also) without sleep and it irritated me, on Saturday my boss came to me and demanded that I submit a file with extremely unrealistic timelines with work accounting for 10 days to be submitted in 2 nights or I will be fired (same project was asked during a 7 day notice period). I took the decision to quit on the 21st of the month with my salary and reimbursement still withheld by the company. Please help