Thank you. This is what I'm trying to explain. E.g. you might see "SC" for scheduled caste or "ST" for scheduled tribe, but you will NEVER see anything like "choorha", "chamaar", or even "dalit". And even when it days dalit, it's in regard to their quota, not caste.
Heck, colleges are not even allowed to ask your caste, only under what quota you are seeking admission!
Your reason for asserting that it doesn't exist is that you have 7 years experience of not seeing it. That's simply logically invalid. You shouldn't be believing yourself. You're speaking in overly certain terms without justification which makes your claim seem unreliable and using insults makes it appear that you have an axe to grind - which is also a sign of being untrustworthy.
Did you notice you just contradicted yourself too? "you will NEVER see [...] "dalit". And even when it days dalit [...]"
Heck, colleges are not even allowed to ask your caste, only under what quota you are seeking admission!