Coolpad India — issues occurred due to coolpad ui

Address:

Pune, Maharashtra, 410502

Hello coolpad, i am sayyed marefat i am owner of a coolpad mega 3. I am using this phone since 1 year.
Recently i got a update of v44 i installed it. But after installation o[censored]pdate, i am facing too many troubles like it displays advertisement before opening any app, net usage increased a lot but i dont use net that much, battery backup is not sufficient. The main reason for this issue is recent update. I request you to take action immediately for this