Royal Enfield — BATTERY / scam

Approx a month before my royalenfield classic 350 was not geting started so i ask for a RSA 3, first time they did not come, second time they came put a battery and bike got started and they say that they going to take bike with them for a week to permanently change the battery but i refuse so they take out there battery and went without information, third time they install a battery but now after only a month battery is again not working when i show this to a mechanic they say battery is too old