Snapdeal.com — wrong shoes size being sent multiple times even for replacement - heights of inefficiency

This is my second complaint, had a bad experience already with snapdeal.

Suborder id: [protected]

I had a shoe ordered with size 8, when i got the shoes delievered the size was 7.5.
I raised helpdesk complain to snapdeal saying this the problem. Thy just updated the status for replacement, without asking me if i want it cancelled or replaced. After that the online portal just does not work, i can't cancel the replacement.
Anyways i waited for pickup and thought i will get a proper replacement.
Yesterday i get a mail saying replacement is initiated and they message says the replacement is of the size 7.5. Got have mercy on me, the replacement was supposed to be size 8 and not 7.5, if you are sending 7.5 again what is te point of replacement?
I tried going to the app and cancel the replacement, when i click on cancel it says, contact customer care??? What is happening : (
How bad can a online purchase get, what ever goo[censored]p you possible can do they are doing. This is the heights of inefficiency.
I want this cancelled, enough of snapdeal for me.