Tech Mahindra — Without warning or mail told me to leave

Without any warning or email warning I was told that my call was bad and I was straight forwarded for ZT and like to inform you about MTI issue my TL who charged me him itself cannot pronounce please check as all new joiners are facing the issue sharing I'd: [protected]@techmahindra.com and another who was telling me that You will be thrown out if you don't follow.. [protected]@techmahindra.com they were threatening me if I do not do job in their preferred shift they will take out ZT and throw me out of the company... And since April month I was doing shift from 2-11 or 3-12 or 5-2 which I requested as I was told I will be getting rotational shifts then too they never changed my shifts I have a family if they ask for a evening marketing. And now I am having problems applying for different companies as they have restricted my application and I have not received reliving letter so that I can apply. Ok If there was any mistake I have done should I be informed/warned by email ask them they wanted me to throw they did. It is sad being a physically challenged I cannot fight. But I can share everything ask techmahindra for warning email. If I take break I get warning email but so big issue no email this seems not good