Delay payment

I had an agreement with Global Webtrix regarding my salary/payment, which they did not provide to me as per the agreed date. Since then, they have not paid the amount due to me. After the payment was not made, I tried to contact them by calling, but they have not been receiving or responding to my calls, making it impossible for me to resolve this issue directly with them. I request that Global Webtrix release my pending salary/payment at the earliest and respond to my calls so this matter can be resolved.