Spam calls at work for something you did not apply for this is starting to get harrasment

I would like to know who is providing my details to the company as they keep on trying to say my credit providers is overcharging my interest and they want to access my itc and I need to confirm my ID number I only have one active account at this stage and didn't ask any one for debt review if you ask where they got your details they say from NCR and they are registered with NCR but they keep on calling as they want to offer debt review and even if you block the number the next person calls you from another number. I feel they can contact people who actually did apply for debt review and not other people as we are at work and get all these spam calls from them I need a way for them to stop with the spam calls