GLS issues

GLS is not delivering packages to my home and just marks that nobody answers the door. This time the marked that concierge was not present, my house doesn’t have a concierge service at all. This happened at least 5 times I tried contacting them, but reply is always the same: “we will ask the driver to follow procedure next time”. I work mostly from home or there is always someone at home.

Did anyone have the same issue, how did you fix it ?