United CUSTOMER SERVICE "Customer Care--WITHOUT really caring!" Internet

First if all, on June 28,2016 United Airlines lost/misdirected 1 out of 3 of my bags! OK, that happens. But in Tampa THEIR agents unable to "track". I promptly submitted info/paperwork AND sent detailed email directly to "UnitedCustomer Service"!(as website directed) There was NO REPLY FROM THEM until almost 2 FULL WKS LATER (July 11 evening) Then, an email: They said "We committed to providing excellent customer service", but they were just now,1st time, asking me about the luggage- what did I lose,they would start to try & find it. I was in 1st Class, & this was their 1st contact/reply??! 2weeks?! I replied tactfully,but expressed dissatifaction! Then I was sent a quick automated form: Asked if I had an contact with C.Service Rep on a specific date. It was NOT THE DATE; so I clicked "no". The form then closed itself on the internet. That was the last I heard from their "SERVICE DEPT"! What LOUSY customer relations!! I am truly sorry to have been such a long-time customer of United Airlines!