Received my experience letter with wrong informations

My name is Priyanka Gupta and I worked as Ecommerce Account Manager for more than the last 2 years in my last company(Unique Sellers & Co. HUF). After 24th July 2020, I got tested positive for the coronavirus and remained on leave to complete my quarantine period. Meanwhile, my boss hired someone else at my place and did not even inform me about this. After my quarantine period was over, I called my boss Mr. Gurmeet Singh Pooji on 28th August, 2020 and told him that my health condition is good now but he told me that he had already hired someone else at my place. I did not complain to him about it but simply asked to provide me my Experience letter, so that, I could join a new company with my 2 years of working experience. But My boss took about 15 days to provide me the same and gave me an experience letter with wrong or incomplete information, he did not even mention my working period in the company,i.e, from 6th June 2018 - 24th July 2020, and my annual salary, i.e, ₹1,38,000.