Where is my payment

Hi,
I'm Seller At Snapdeal I Was Suppose To Get A Payment On 10th Of July But I Got A Partial Payment And They Initiate A Not Even A 25% Of Due. Then They Said They Will Initiate A Remaining Amount In Next payment Cycle Which Was On 17th of July Again They Shift The Payment Date From 17th To 25th July 2017 And Still Payment Is Not Yet Initiate And They A Giving A Reason That Coz Of GST System Is Upgrading.
My Seller Code : S278a6
My Registered Contact No.: 9970508779