Being cheated at the grocery store can we do anything

I am routinely charged the wrong amount at the grocery store for sale items. I have to assume that it happens to every person who shops there. They make their receipts difficult to decipher. They pulling an office space on us or whatever Superman it was also in. Tired of being scammed and swindled. If you think it’s an accident, it ain’t. I don’t know if this fits here but idk where else to post