Byju's — Request for refund

Respected Sir /Ma'am,

Since I received a call from byju's for extending 1year IAS Course amounting Rs. 24000/ for which I had paid Rs 4000/
as initial payment meanwhile they enrolled me for 2 years course period which results to Rs. 36000/which I was unable to pay. Having many discussions with team byju's for cancellation of extended course. The team recommend me to pay extra Rs 3000 (that is a sum of 7000Rs as down - payment of 2years course) only after then they will initiate the refund process.
As mentioned above I am not willing to extend the IAS Course. So I requested you to refund me the amount of 7000Rs as soon as possible.