Radar Contact
Pattern Altitude
If that is the case, that would get my goat. There is zero excuse for ATC training to cause degradation of safety or efficiency. They have an instructor plugged in with them that should be forcing them to run efficient spacing or over-keying to make it happen.It seemed like they were keeping an unusually large separation between planes, which I found out later on my tower tour that they were doing ATC training all morning. And no T&G, they made me land and taxi back due, possibly due to training.
If this happens at your airport regularly and you are reasonably assured you are getting crappy service, contact the facility and ask them to do a traffic management review of the time period. Give them your tail number, the time/day it occurred with an explanation of what was going on. Be respectful and understanding that there may have been other external things that you don't know that caused this but they should get back to you with an explanation. It will hopefully result in either an legit explanation so you know you weren't getting screwed or them giving some needed performance management to the trainer to help them train better.
*Disclaimer: All ATC facilities have their own personalities. Your's may or may not have the staffing that larger facilities allow to do this in a timely manner although they should still do it. Large TRACONs and Towers would take your information, review it and get back to you. Smaller facilities are shoot and miss. When you call ask to speak to the supervisor.