Amazon India — Non Delivered Product

I ordered a Massage Gun and instead was delivered a Breast Pump. I placed a replacement order and now I am being asked to Change my address. I have more than 100 invoices on the very same address and the recent delivery was on 17 aug which was the breast pump which I didn't ordered. Not sure what happened all of a sudden and i am being asked to change the address. I needed massage gun to help with my therapy since I had taken leaves from office effective 16 aug and so far i never received it. After calling the customer service twice, i don't expect any help.