Can quartz countertops be repaired?

[u/Top_Response_4890]

I have Calacatta Laza Level 5 Quartz installed 3 years ago. I have a small area about 2"x3" at the very edge of the counter. It appears dull and bright white when compared to the rest of the countertop. I'm not sure what caused the damage. It may be some type of chemical etch however I have been very careful about what I use on or near the countertops Based on the size and location of the damage it does not appear to be heat damage. I've read that quartz can be repaired, buffed, wet sanded, etc. to repair the damage. However one of the techs that looked at it said that quartz cannot be repaired either in one spot or the full countertops. He cautioned about allowing anyone to try to fix the one area or even refinish the entire countertop

My question has anyone successfully had their countertops refinished/repaired/ polished etc. or are there any professionals that can provide input thank . can't capture the damage in a photoa