I don't want to reveal details so the store will be referred to as 'STORE'.
Approximately 11 weeks ago I bought a tempered glass screen protector and applied it to my phone 9 weeks ago. About 3 weeks ago I noticed that there was a crack on the protector. I've been in contact with the STORE and they said it was probably due to coins and keys (I always keep my phone by itself in a pocket). They've said they will not give me a replacement or refund, but have agreed to a discount of 10%. That's approximately $2. Am I entitled to a refund or replacement? What do you think?
EDIT: Jeez, looks like I was off my rocker. After reading and replying to the comments I've now understood that the glass worked like it was supposed to and I should get cheaper protectors next time. Thanks for all the feedback!