Planetspark — When we asked for refund they are not returning our money but initally they agreed

Address:	https://www.planetspark.in/
Website:	www.planetspark.in

I had enrolled in planet spark for excellence course and paid the amount and all of a sudden they changed the teacher and schedule without informing us, While joining the course they promised us for the refund if we don't like the class o due to any reason, they had agreed for refund for not attended classes.

so i requested for refund and its been almost 4 weeks for now, and no response from their end. They have just turned blind eye on us.
I have the full WhatsApp chat and am planning to move legally