Maruti Suzuki India — I am complaining for not responding to issue an invoice copy

Address:

560029

I am trying to get the invoice copy of my car purchased from varun motors vishakapatnam in the year 2005.
But haven't received any responses when i call to the showroom they will say that they don't have the records, what they meant they don't have i can't understand?? Later they asked me to send the copy of registration certificate to issue a written invoice copy, even though sending i haven't got any responses.
Will you please talk to them and resolve my issue as i want to pay karnataka state road tax.
I will be thankfull.