My client had me working non-stop for over 10 days on a 100-page NCLT Oppression and Mismanagement Petition (which is being filed by another lawyer), and I billed him INR 2 lakhs for the work. This client and I must have clocked at least 7 all-nighters together- to pull this off. I also handled another case, got a good order, and charged 35K. Despite daily legal advice calls (which come to this date), I've only been reimbursed expenses and received 20K last Saturday for my services. Have been short-paid by over INR 2.10 Lakhs. It's demoralizing. How do I talk to my neighbor-client about this, and keep things friendly?