Sony India — sonyliv app not working for premium member

Address:

600091

I just subscribed as a premium member of sonyliv. I watched fifa world cup first match with lot of disturbance. Im using samsung galaxy s8 plus mobile with 4g data speed but video quality from sonyliv app is very bad and lot of times connection has been lost and feeling bad that i subscribed as a premium member. Hotstar app is very good compare to sonyliv. Moreover i didn't see any highlight videos of post match. Let me know what is the procedure to revoke my subscription and get my money back to bank account.