Samsung — Defective product deliver mobile galaxy m21

I was ordered my galaxy m21 mobile on 24/06/2020 which order id no is [protected].
Today at 3pm I received my product.
And when I was unsealed the box and switch on the mobile.Mobile was started after that when I go for insert the SIM I found Sim trey is not provided /available with the mobile.
When I contact customer care and tell them the issue they were asked me to mail the lease share the images of the product received with /, packaging, brand box etc. Post that you are requested to allow us 5-7 days to co-ordinate with the delivery partner to investigate the issue and arrange to provide the necessary replacement.
I was provide all the required information to them .
After that they asked to visit Samsung service centre and tell me to ask CSR COPY from service centre.
I also provide them CSR COPY on 8th of July 2020.
From that day I am continuously call the customer care.but my issue is not resolved till.they always told me to wait for 24 hours from 8th of July. I also had a word with supervisor TANVEER SINGH AND SATANDER PAL. But they also not resolved my issue.