Xiaomi India — Complaint regarding storage capacity: Have 48 GB instead of 64GB (Redmi Note 9 Pro Max)

Hi Sir/Madam,
I purchased Redmi Note 9 Pro Max 9 months ago. I read specifications, it was mentioned that it has 64 GB internal storage capacity. But I looked today careful when I was facing storage capacity issue, it's came to my knowledge that internal storage capacity is only 48GB.
It's a serious concerns that I have paid for 64GB storage capacity phone and I got 48 GB capacity phone.
I checked the storage which is also misrepresent. Please find the attached screenshot for reference. If you add total used space, it's around 43 GB but it showing me 58 GB.
One more screenshots which exactly represent the correct available space and storage capacity of the phone. Please find the attachment.

Hoping to hear from you soon.

Thanks & Regards,
Prashant Chinchkar