Free unlimited texts, price including international customers originally (9)
I believe the answer is:
extricate
'free' is the definition.
(extricating is a kind of freeing)
'unlimited texts price including international customers originally' is the wordplay.
'unlimited' indicates the central letters (discard the edges or 'limits' of the word).
'price' becomes 'rate' (I've seen this in other clues**).
'including' means one lot of letters goes inside another.
'originally' indicates taking the first letters.
The central letters of 'texts' are 'ext'.
The initial letters of 'international customers' is 'ic'.
'rate' going around 'ic' is 'ricate'.
'ext'+'ricate'='EXTRICATE'
(Other definitions for extricate that I've seen before include "Disentangle, set free" , "Free (something) from difficulty" , "Free from entanglement" , "Free from complicated situation" , "wriggle free" .)