You need a surge protector for the phone line that has a higher Joule rating that comes for the phone line that is included as part of the AC Power surge protector.
There are separate protectors just for the phone lines. With these it is very important that they get a very good ground connection. Short as possible and connected to the ground stake that the telephone connected its main box to.
Here's a link to a forum member that is an expert on telephony. He posts in these forums under the name Coryphaeus. I'm certain that he will add more info if you visit his site and contact him if necessary.
Everytime is storms it takes out the phone line of my surge protector. I had the same protector for years with nothing happening. Now I am on my third one in 4 months. Any ideas why this is happening.