Coolpad India — not opening properly once I have re started mobile phone

Address:

Krishnagiri, Tamil Nadu, 635109

Dear sir,
Please find herewith attachment for my online phone purchasing bill for your information..
I have on purchasing coolpad cool1 mobile phone from amazon.com online shopping
Dt 4 april 2018. Invoice no. Qnec-58.

Mobile once re start or turn off and again on error msg will coming (Optimising apps 1 of 1.) after it will be taking normal screen on 20 minutes minimum.
So please kindly i requests you, please replace new mobile are please refund amount i will looking coolpad another model. I have unsatisfied in this mobile working...

Regards,
Baskar. A.
Hosur.