Apple India — new battery replaced still not working

Address: Mumbai City, Maharashtra, 410209

I had recently got my iphone 7 battery replaced from apple service centre. Still battery is draining at a very bad level. I’ve complaint in apple but they making me run after this issue since a month. I really need some solution to this. They’re very ignorant to my issue. It’s really humiliating and tiring to keep talking on phone to apple care people to get my issue resolved. I even showed the service centre people that my battery is draining, instead of helping they gave me apple care number and asked me talk to them. I want new replacement for this battery or my money refunded for making me fool and wasting my time.