Synchrony Financial Credit Card Complaint

Synchrony Financial Credit card department,

Late fee California

I had received a bill on a credit card in the mail only after it was delinquent, rather than prior to its delinquent status. The delinquent bill had late fee charges and interest. This is the second time this particular company has engaged in this practice. Upon calling their service center, they removed the late fee charges ( but not interest, which is minor to me ). I would like to register this in case this is a widespread practice. The company is - ( Amazon credit card ). I think the bank is Chase.