Call interrupted by incoming calls

I will be on a call and get an incoming call. Rather than give me a choice to answer or not, the 2nd call is automatically on my line and my first call is lost.

crwdns2934089:0crwdne2934089:0 crwdns2934093:0crwdne2934093:0

crwdns2934109:0crwdne2934109:0

crwdns2889612:0crwdne2889612:0 0
crwdns2934285:0crwdne2934285:0