I too have had this problem. Many people have now cancelled their landlines but I still call them or worse yet send them a text. I tried using the "-" sign but that didnt work. I have an S10. Look up to the left hand corner and you will see 2 flat ovals. One with the word Phone and the other with Google. Press on the one the one not highlighted (probably Google) and then do the number delete (using the "-" sign by the number). It looks like you have to delete off both contact lists to solve your problem.
... View more