Chevrolet India — about frequency of oil change

Address:

Kannur, Kerala

i have bought new beat from german cars kannur in jan 2014. at the time of delivery they have clearly told that the frequency of oil change is 15000 km but last service in last month they told me that " company revised their policy we need to change oil in 7500km " it will be causing extra 4500 rs burden every 7500km ... also they have told to my fellow car user that he need to install an engine gaurd and 50% of money we need to pay is this the way of cheating... i need a solution