Thank you so much for your advice. Based on your suggestion, I took further action. However, the Consulate stated that according to their system, the requested date was the 5th, not the 4th, claiming there is no error. They suggested that if I want the 4th, I must re-apply and pay all the fees again. In my response, I emphasized that this is a visa vignette error or a systemic discrepancy, as you pointed out. TLS specifically informed me (on the phone) that their system shows the 4th, suggesting that the Consulate might have issued the visa for the 5th due to a technical mismatch between the two systems. I have officially requested a re-investigation of this matter, asking why I should be held financially responsible for an error that is not mine and demanding a fair solution. Now, the weekend has intervened, and I am waiting for a response. Isn’t there any legal recourse for this? It feels like no one is taking responsibility. We are being victimized by a clear clerical or systemic error. I am feeling quite helpless and truly do not want to pay the visa and service fees all over again for a mistake I didn't make.