A service call is a request for assistance from a professional, usually in the form of a technician or engineer. The term 'service call' can be broken down into four parts: NEXT (4 letters), AMEN (4 letters), LET (3 letters). NEXT refers to the NEXT step in the process, which is typically to contact the service provider. AMEN is an acknowledgement that the service call has been accepted and will be addressed. Finally, LET is an instruction to the service provider to begin work on the service call.