GST Refund

Manish Jha (18 Points)

05 January 2019  
Sir,
We are receiving 18% GST Input against service receive and GST on sale is only 5%.
Henceforth in my book large amount of input accumulate.
Can I take refund against this?
Someone told me that I am not eligible to claim refund because of this accumulated amount is due to Service Receipt.
So kindly advise and if possible also share notification regarding this matter.

Thanking You
manish.jha1412 @ gmail.com