With any customer support you will run into some that aren't aware of all of the things they can do or should do. Even if they are not able to do something they may not be aware that it can be escalated and sent to somebody that can do it. With the amount of tracking that is done with tickets unless somebody was looking to get fired they aren't going to just flat out lie and blow you or anybody else off. Just like any customer support personal some are willing and happy to go the extra mile for other while others only do exactly what their job title demands of them. If you really think more can and should be done try to reopen the ticket or move up the chain with it.