Hi, I work in a manufacturing company. For quite some time, we have been observing that the operators working at machines that provide us with raw material for another product are not delivering the correct quality of material. As a result, many of our consignments have been rejected. We have already tried speaking to the HODs and the shift in charge, but to no avail. Now, we have been asked to communicate directly with the operators so that they understand the company's products were rejected because our raw material was not finished properly, leading to a significant financial loss. Could you please advise on what kind of communication tool I can use to engage with the operator-level employees? I need to convey to them the financial impact of their actions on the overall company. Since this is a manufacturing plant, electronic media displays are not feasible.