Cognizant Technology Solutions — Shared service letter is not helpful

Address:

No 6/8, Rallakothur, Venkatasamudiram, Ambur, Vellore, Tamilnadu – 635811

In regards to my service letter, which you published, I am really disappointed.
The company (CTS), with which I had a year of association and always taken great pride in your leadership, governance, and technical skill, is no longer in need of me.
You fired me as a result of an error made by my previous employer. I agree, but if you put it in my service letter, what would it mean for my career? If I provide the same kind of service letter, will you hire me?
Your organisation (CTS) also made the error of paying my final wage (31 days) for unfortunatly more days than I worked(28 days), but I accept it and just refunded that amount.

I kindly request two things from CTS.

1. A letter detailing my one-year experience (which I need to share new hires)
2. I still haven't received my full and final settlement.