Disappointed, would not recommend

I bought 2 blocks of 10 lessons for my twins birthdays. Advised to have 1 1/2 hour lessons at a time for each son. Each week the Instructor picked them up from address and drove 15 mins each way before letting them drive - all taken out of their allotted time. 1/2 hour per session per son was wasted time. When queried with instructor advised this is how he operates and that they should be watching him as he drives as part of learning process! They can do this with anyone - not have to pay for this. His attitude was rigid and could not see my point. To be paying 3 hours a week but only gaining 2 hours actual driving is NOT what I signed up for. I have Checked with other instructors they ALL stated that, whilst they might drive away from house on the first lesson , certainly wouldn't on subsequent lessons.
Advise to others looking to learn, look at other instructors as this is a false economy and not the most patient instructor either! Would definitely not recommend this driving school.