Mother diary - Online delivery is not happening and money got freezed iin mother diary wallet

am writing to bring to your notice that the Mother Dairy dealer in my area is not sending milk during the evening slot. Due to this issue, I am being forced to consider ending my subscription.

As a customer, it is inconvenient and unfair, since this problem is not from my side. I kindly request you to shift my subscription to the morning delivery slot instead. However, when I try to make this change, the system asks for extra GST and additional charges. Since the fault does not lie with me, I request you to waive these extra charges and make the required changes at your end.
After this I had a discussion with the seller, but he is denying delivery, stating the distance is *.* km. If delivery is not possible, then how was this order accepted in the first place?

Today also I personally walked to the location, but the seller did not come to deliver the order. I kindly request you to refund the remaining amount to my personal wallet, so that I can purchase Mother Dairy milk from nearby outlets.

I hope you understand my concern and will do the needful at the earliest.