Instead of ringing them to tell them you love them (without chit chat first because that makes you nervous about what your going to say) just pick up the phone and which ever one answers just say "I was thinking about you today, I never tell you how much I appreciated what you did when for me when I was younger" and then quickly try to slip a funny an anecdote in of something you did when you were younger .... on the lines of can you remember when I ....... Things like that usually break barriers down and if you feel confident enough when ending the call just say "love ya Gran/granps/Nan". If you get into the habit of just saying love ya at the end of every call to them it will become the norm.
They might be sat there after thinking whats up with our misskitty but inside they'll be so happy
