Useless customer service and ******** conduct

I am very disappointed with Spark Schools. They allow you to apply for space knowing very well that their classes are full. I app**** for a Grade 1 placement before the schools open in January, declined after 2 days and since then I have been struggling to get my refund. The accounts department is supposedly only reachable by email. How ridiculous is this! They don't even acknowledge emails or respond to any queries. I am frustrated and don't know what to do next. Maybe I should visit one of their schools and demand attention. This conduct by this school is ******** making money from application fees, holding on to deposits to earn interest from the banks