Xiaomi India — battery problem.and opening of seals

Battery is draining to fast like from 60 to 0 and it's switched off and can't start and seals of the phone is also starts opening it's too much disgusting i have tooked this phone by too much trust on xiomi company but the company is giving fake product so please take my mi note 4 and repair it or please replace it because iam getting too much trouble. While using phone always it switched off at best moments like having pics any official work i think this phone is waste for me