Bajaj Finserv — illicit cheque bounce charges

This is to inform that i had purchased a product in the year 2011. Having cleared all my dues regularly. Now in this year 2018.. I recieve calls almost 5 to 6 times a day from the call centres that i am due of cheque bounce charges.
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After 7 years of settling my dues, bajaj wants cheque bounce charges which i cleared at tgat time.
This definely needs public attention and police assistance.
I receive calls almost 3 tk 4 tines and sometimes 10 times a day.
I have registered a complaint regarding this matter.
I hold a bajaj card with a two lakh limit which stands enough eviidence that no company will issue a card if they are due of any charges to them
If the matter is not looked into and if i keep receiving such calls ahead.. I will be forced to being the matter to consumer attention through tv media.