Service with a permanent QR Code to accept Bitcoin / Crypto payments?

[Johnnyapps]

Hey everyone,
I’m very familiar with crypto but I’m a rookie when it comes to the business payment/processing side (bitpay and others). I’m wondering if anyone knows of a service that would allow my friends small business to accept bitcoin/crypto payments through a single QR code that would never change. Reason being, we would like to design a printed graphic that would be perminently shown in the store with the QR code included on it (multiple QRs for different currencies would be fine also). From there, we are trying to be able to load a customers individual balance to the QR and allow them to pay for their total simply by snanning it.

I apologize if this comes off as a newbie question. Really just looking to find out if this would be possible or a push in the right directions as far as which crypto processing service to contact.  Thank you so much in advance to anyone with Feedback, really appreciate it!

[OmegaStarScream]

There is a good reason on why a new address is generated for each transaction, or at least each user. If you're just going to hand one address to everyone, how are you supposed to know which customer sent what exactly?