They changed the contract
The company that I am working on has given me a lot of tasks to do. I do not decline those jobs because they are supposed to pay me for those jobs that I have worked for. We agreed that I am paid differently per project that is assigned to me. It is written in our contract and I signed the terms and conditions because it met the expectation that I am striving for. Now everything changed since there are a lot of workers. I am not being paid as told.