Can i sue a brokerage firm 5paisaLtd for faulty service & misappropriation of my account with them?

There is faulty service on the part of 5paisa brokerage services. That i got 27 Bharat electronics bonus shares credited to my account on 28th Sep 2017 which after so many reminders were initially in their pool account & later credited to my account which i was not able to sell because of their portal/backend technical glitches or poor infra.I registered the issue with their customer care team several times but this is still pending & every time they mark it as resolved themselves without actually resolving it. Now, after assurance from their team I sold 27 of the said scripts on 16th Oct 2017 which were auctioned by them as the shortage in my account on 18th Oct at a differential higher price of Rs14.59 per script besides those 27 bonus shares that are not reflecting in tradeable holdings but yes very much in their script reports to which they don't agree. Their team denies that I have the credit of 27 shares contrary to which is a fact proved by their attached report. I tried lot to explain to their team of the mistake with not less than 100 emails & none of them resolved the issue. Below are the occasions when the tickets that have been created by them on initiating the requests & each ticket has not less than 10-15 email reminders & irony is they have marked all these as resolved. I am now fed up with them & it has really been harassment for me since past 2 years every single time I have been just trying to prove facts. Ticket Created 9th May 19 ticket ID 2235807 Ticket Created 5th April 19 ticket ID 2135700 Ticket Created 29th March ticket ID 2106561 Ticket Created 2-Nov-18 ticket ID 1540588 Ticket Created 26-10 ticket ID 1518561 Ticket Created 26-10-17 Ticket ID 390186 Ticket Created 12/10/2017 Ticket ID 347700 I feel this is sheer cheating & harassment of investors. It was a matter of Rs ~5000 for which they have been harassing me since last 2 years on numerous occasions for which they are liable to indemnify me for the loss + damages + harassment.