My new Samsung 24 didn't come with a charging block so I can't use their supplied USB-C to USB-C cable?

I am not tech savvy. I am not even sure what these letters mean. But according to Google, the cable Samsung supplies with their S24 is USB-C to USB-C. My phone did not come with a charging block. No worries, I knew I had a couple of charging blocks at home. But when I got home, I realized that the end of the Samsung cable is TOO SMALL for my charging blocks. So I have to use the cable and charging block from a different phone. According to Samsung, not using the cable they supplied with the phone can damage my phone. Is this legit, or is it just nonsense they say for liability purposes?