Score Improved by only 2 points in Verbal

In enrolled for this course after seeing its advertisement on the various GMAT forums. I was impressed by its claims that it's a course designed for non-native speakers.
The course structure is good but I didn't had much improvement on my scores. The reason being lack of GMAT type questions. I was doing well in the course but during the actual GMAT Exam the questions seemed totally new to me. In order to improve the student's reading skills, the course should advise the them to read articles from magazines The Economist.

Another thing that I didn't like about the course is that after the Exam I had dropped a mail to its founder asking for some advice since I didn't see much improvement on my score. I didn't receive any reply.