866-234-1377 I am trying on this number but its incorrect, what to do?

please see the highlited part. HP CARE PACK SERVICE. Please tell me how can i get it and use it as well. what are the benifites it has. My laptop is out  of warrenty now so if I 'll buy this pack then does it make any sense. Will it give me the same facilities what we get in the warrenty pierod. And i also tried the given number but it is saying incorrect. Please help me ASAP.

Thanks