Install using InstallUtil:
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1. Open Command Prompt as Administrator
2. cd C:\Windows\Microsoft.NET\Framework64\v4.0.30319
3. InstallUtil.exe C:\inetpub\wwwroot\SCOBALWCF\Agent\SCOBAL.SAgent.exe
4. InstallUtil.exe /u C:\inetpub\wwwroot\SCOBALWCF\Agent\SCOBAL.SAgent.exe

Install using sc:(in case different name)
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1. Open Command Prompt as Administrator
2. sc create SCOBALAgentServiceSKYTEL obj=LocalSystem DisplayName="SCOBAL Agent Serivce (SKYTEL)" start=auto binpath=C:\inetpub\wwwroot\SKYTEL\SCOBALWCF\Agent\SCOBAL.SAgent.exe
3. sc delete "SCOBALAgentServiceSKYTEL"