The most common and most likely answer to this crossword clue is the 7 letter word DIEBACK
I've seen this crossword clue in Independent
D
I
E
B
A
C
K
More clues leading to the result DIEBACK
Buddy explains!

The straight part
We know that "problem for established services?" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case problem for established services? = dieback.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does DIEBACK mean?
DIEBACK noun- The browning and death of a plant shoot starting at the tip, due to either disease or climate conditions