OnePlus India — not fixing/replacing my brand new oneplus 7

Address:

122022

I bought a oneplus 7 two and a half months back. I have been experiencing phone lagging and hangs since the first day. I have been complaining about it repeatedly since then and my issue still remains unresolved. I have taken my device to the service center twice and i sent it for repair for one week. They haven't been able to diagnose any issues in three attempts and multiple troubleshooting/reset procedures.

After all the complaints, the only response i get is to take it to the service center again. I have been asking them to assure me in writing that they will fix my phone 100% this time and if they are unable to fix it they will either replace my device or reimburse me in full. They are not assuring me in any way and just keep asking me to take it to service center hoping that the issue gets resolved. I am very very frustrated with the service provided.