Complaint regarding kotak mahindra bank loan

I have taken a bike loan in kotak Mahindra Bank on 19.03.2020. July month payment not done with in the time line, however iam paid that loan amount 23rd of July and the same month 8 term’s  bank check inatiate because of that realisation I loss my credit score and check bounce charges (3500/) same month I approtch kotak Mahindra Bank person he said will check and update after that iam not receiving any calls, taht team not responding till date, kam draft mail also.

Need your suggestion in this issue.

Ratna
Ammaravati road, Pedakura padu, Guntur, AP
Pedakura padu, 522402
Email: rxxxxxxxxxxxx9@gmail.com