I'm getting spam texts from a caller id that only comes through as "Snapchat" with no number attached, i think this is called alpha tagged. I'm sure it's not real as i don't use snapchat. Regardless i want to block these annoying messages and on my samsung galaxy s10 i have no option to block texts from caller IDs that are alpha tagged. Why? Even if this was a legitimate business i should be able to block whoever i want. Any ideas?