Birla Sun Life — policy surrender

After talking to an agent 2 days ago I emailed the concerned team but have got no reply. I called the helpline today and got response that this is the amount they can see my policy had. I checked the Fund Value at the time of surrender and had been monitoring it for a month and it was always showing around 3, 80, 000 while I received the amount of 3, 20, 000. I asked for the manager this time when I called for assistance and he is asking me for the screenshot of the Fund Value that I could see.
NOTE to all the Birla Sunlife customers- Keep a Screenshot and references of all your conversations

I received a response today to ask for the statement or screenshot the same question the previous manager asked. I checked my emails thoroughly again and I found a complaint email instead that I wrote to them when I closed another policy. Indeed I should have been more vigilant and not have believed in the competency of the company.