First of all, it was not 4 months, I believe it was 1 or 2 months...
Second, the airplane was on overhaul and was NOT flying at the time...
Third, if that particular student would complete the training modules (ATPL) sooner, or at least on schedule, he wouldn't be ready for IR right at the time when the airplane was on overhaul.
It's somewhat unfair from you (I guess you are this student or at least his friend), that you are dragging out this situation after more then 2 years since it happened, and are now running a public campaign of negative reviews against ACC over 1.500 EUR. When all we did was to try to solve the situation in the best and fastest possible manner (the student was in a hurry at the time), so that the student was able to finish the training and start looking for an employment.
We had absolutely no interest in delaying the student's training progress, and yes we agree that it was an unfavorable situation that we found ourselves in, but we were doing our best to solve it, and at the time and circumstances, it was the best option that was at hand. We have learned our lesson and this was the first and the last time something like this happened.