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Please note that concerning the salary issue, you must reffer to the written contract,
as consent makes the law between the contractors,

As per the UAE labour law, no employer can force the employee to accept a reduced salary and pressurize them to return the salary made in the past.

You can file a complaint against your previous employer about forcing you to accept a reduced salary and make such transfer in the company/employer bank account.

All the documents substantiating the above shall be submitted in the labour department
The Ministry of Human Resources and Emiratisation (MoHRE) issued Ministerial Decree No. 739 of 2016, which stipulates that:

If the salary has not been paid within 10 days of the due date registered in the WPS, it is considered “late.”

If the salary has not been paid within one month of the due date, the employer is deemed to be “refusing to pay wages.”

So all you have to do is to contact MoHRE by visiting their local labour office to get advice and support, then accomplish and submit an application form that you'll find in their offices,

You have to submit these documents with your complaint too:
 labour card, 
Emirates National ID, 
labour contract, 
and other documents maybe require, it may vary on a case-to-case,

If, in the event that the question is intended otherwise, you can kindly ask it in detail and we will respond to it in the shortest time,