Rude customer service

Yesterday the courier guy from Fastway came to deliver a parcel at our office. The lady who needed to come and collect the parcel, unfortunately, was busy on a telephone call. By the time I went down on behalf of her, we were called a second time to collect the parcel. We are based on the 4th floor, so it does take 2-3 minutes time to get to the ground floor at the reception. When I arrived at the reception, the courier guy was already leaving the building. He did turn around to deliver the parcel but made rude remarks saying he is on a schedule and he can't wait. I apologized, but he kept on being rude. I will for sure never use Fastway as courier services just because of the way the courier guy responds to clients. What a distasteful manner for a courier guy to deal with clients, who represents the company sending the parcel.