Incomplete courses served

At end of each course(Excel, SQL etc) the trainer is saying we will see this in great details in upcoming sessions but there are no upcoming sessions, for me the course has ended. You guys created half cooked courses and served us. The courses are great but incomplete, very dissapointing yaar. This course genuinely has potential to be one of the best data science course but you mismanaged the things. I hope someone at Trainity takes note of this and improves the course and provides a complete course rather than an incomplete one.