What is the process to initiate a warranty claim for Cisco 10 MM SFP ? The clip is twisted and its not going or exiting from the System.

I am trying to convert Access Ports into Trunk Ports on C3850X 10G MM SFP but neither I cant change them nor I can assign a Native VLAN.The links are not physically up which means the other side is not connected yet does that make any difference ?Con...