Sort Months o

I advise and Ashish, others also mentioned the same above. (separate date table concept)

a) Create a table for our needs i.e., simple month table "Month Names" 

The table is static and create as using enter data

The table data has always only 12 rows i.e., month names. The names are the same values in the Transaction table.  January, February ...

Table: "Month Names"

b) Create "DisplayMonthSort" in the transaction table. Which Ashish is called as Month Order column. Steps are

Create relationship between "Month Names" and your Tx table "Mail V..."

Bring the column "DisplayMonthSort" to your transaction table

DisplayMonthSort = related('Month Names'[Display Month Sort])

and do the sort order like we talked above.

Try the other steps like Sort by column, hide in report view ...

See if this works

Note: Sample mockup data .pbix file always helps  

Thanks