find out the payout amount.
go to bank and get a cheque for that amount.
go to finance company with seller and settle the account.
give finance company your documents.
finance company wil provide book in your name.. process take 2 to 4 weeks.
pay seller the outstanding purchase price amount.
Why did they clean filters if they were replacing them ?
If it has been cleaned and service 4 times since May..... the leakage issue is an instillation issue.