Unicornstore.in / Unicorn Infosolutions — Arrogant and rudely behavior of staff

Address:

Pacific mall subhash nagar

I have purchased I phone 13 from unicorn store subhash nagar Pacific mall delhi
I given a mobile in exchange with bill box chager they taken that mobile and I paid the rest amount via my credit card after completing all the process they ask me to take back my mobile which I given for exchange I asked reason
So they said your bill is not valid
Than I ask them if my bill is not valid then why start the process of exchange
Why you wasted my 2.5 hrs
I will not give mobile back because I have paid all the amount
Actually one member of cashyfy ask me to extra money to accept that device for exchange I denied so he forced me to pay the money other wise they will see me outside they giving me this kind of threaten
Specifically one person who is belonging to sikh community working on same store trying to threaten me again and again
Please take necessary action against them immediately