Review Complain Of unknown deduction

I am writing with regards to a deduction that was made on my salary for the month of November, 2021 of 20,000.00. (Twenty Thousand Naira)

I work at the National Orthopaedic Hospital Dala, Kano with IPPIS No: ******** and I do not remember approaching your organization for a loan. I do hope a rectification would be done regarding this matter.

Thanking you in anticipation of a quick response.

Regards
Zainuddeen Abdussalam