Statement Discrepancies & poor customer service

I long lodged a complaint against FNB for their poor customer service and an enquiry I raised with them for discrepancies on my Statement. I received correspondence about poor customer service (which is still not dealt with), however nothing in relation to my query of the statement.

It’s been well over a week and nothing!

The most important issue - discrepancies on my statement is not being dealt with nor is it being referenced in your email(s). I made numerous calls on the 26th of January 2021 and until now I have not heard from you (FNB)

This is a disgrace.