Where can we complain maintenance delay

[Uncle]

I got my new fold 3 screen peeled midline bubbles spontaneous from middle ,manufacturer issue ,still warranty, they said 10 days,now one month,they said sorry call wefixit, they said just waiting original screens we've shortage,i see it is not fair to hold my phone , everything linked to phone these days i got mail confirmation and it is not my fault why Samsung is doing this ,where can i raise this.

[BandOfBrothers]

What maybe happening is that the Service Centre is going to replace the whole display and not just the plastic screen protector, which isn't unusual due to the sheer operation of trying to fit the screen protector.
If there is a substantial work load before yours and possibly part delays then this can all impact on the time frame.
I hope you get your phone sorted out ASAP.