I am writing this on my wife's behlaf name: Ms. Sanchita Majumdar who flew from bombay (BOM) to Newark (EWR) through London (LHR) on Sunday Dec 10, 2017 india time and arrived EWR on Sunday Dec 11, 2017 USA time, booking ref # DZ9K5W, E-ticket # [protected]. On arrival, she discovered that one of her bags is missing so, we filed a complaint with the local airport staff, who called us, two hours later and gave us a ref # EWRVS10749, we were told by the local airport staff that, may be the bag is left behind at the LHR airport and they would trace it & get back to us in 3-4 days time. I called your customer service team already for couple of times and at all occasions, my plea had nothing but fallen on deaf ears. All I hear from them, is SORRY and we are STILL tracing it. Missing bag has a lot of things with sentiments of our late grand maa and its very important for us to find that bag. Also, I raised the same complaint online with their delayed baggage team, Ref # VSCR-[protected]. Now, after taking this up with two of their departments (Customer service and online baggage delayed teams) still when i have no positive answer, i had nothing but to escalate it here with the you guys, as well. I look forward to hearing from you and help me retrieve my missing bag.