Ring them after 6pm Mon - Sat
It took many goes over 4 nights before they answered the phone, most of the time the phone was engaged, when I used ring back they did not answers. Given there is a charge for ring back, I did not risk using it again.
In the end I got though to them and they were booked up.
I booked to see the same film at Stockport, on line with no issues and only a few minutes effort. Maybe one day I will give Marple cinema another go, as I have heard that the seats are very good. We are also now easting out in Stockport, so yet more money Marple as lost….