The word Diservice is misspelled against Disservice, meaning "An ill turn."
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Disservice has double "ss" is mispronounced as "s"
Remember double 'SS' in between the strings di & ervice which should not be misspelled with single 'S'
Wrong Spelling:  di-s-ervice 
Correct Spelling:  di-ss-ervice 
Find more wrongly spelled words of Disservice to spell it well.