Contract not renewed , even though manger promised read mor

If I were you, I'd immediately start packing and looking for another job. Sorry, but that's how it is. Mere oral assurance to renew a contract amounts to nothing. Maybe your Manager/organisation did not want your services any more and leave was used as an excuse to soften the blow OR maybe they are really annoyed by your leave [regarding which the Manager seems to have been 'informed' rather than 'asked for permission' as it'd appear from your post] - either ways, it is immaterial.

Best you can now demand is a proper, honorable exit as provided in terms of the contract and with a work ex certificate, as against a 'don't come from tomorrow' line.

Saying, asking, telling are verbal mode of communication and d difficult to prove.

If you have acknowledged and approved copy of leave then it might have helped to claim deemed extension of contract.

Even then the employer could have terminated it with notice/with notice pay in lieu of notice period.

Obtain clean relieving and firm up your next employment.

If you have rapport with Managers/employer they may agree to give you service certificate/salary certificate even for a later date.

Try for it.