Need Help with 3 computers and only one is activated with Norton now

we have 3 computers

 

a) The desk top ~ This computer had Norton

b) My Computer..~ I bought this computer and it had Norton..when it expired I added (a) and (b) together. My computer crashed and I had to reinstall Norton last year to (B)

 

c) My hubbys computer~ we bought this computer last year ..it came with Norton

 

Problem:

 

My computer (b) was just charged via the automatic renewal... but my desk top did not (a) It keeps asking me to get Norton

 

My hubbys computer (c) His Norton just ran out and I want to add it to my subscription .

 

I want to know how to activate Norton on my desktop (a) and my hubbys computer (c) without being charged again.

 

Is there a phone number I can call? I need halp Please!