I went there to ship some documents to an address ...

I went there to ship some documents to an address in a foreign country because the location is close to my office. I have sent to the address several times and that's why I noticed the price of this UPS location was surprisingly a bit higher than the other in, for instance, VA. The service of the attendant was OK except that he made me waiting while he talked on the phone with another customer. Later on the day I received email from UPS saying that a commercial invoice was missing from my parcel and the missing commerical invoice was causing a delay. I was contacted the next morning by UPS to supplement the information for the commercial invoice. The trouble could be saved if the attendant pays more attention to the information I filled in in the shipping form. He could remind me what information I missed so I could remedy it immediately. I will stick to the UPS near my home in the future.