change bsnl broadband 250 to 625

i am user of bsnl broadband 250 plan i ant to change my bsnl broadband plan 625. so how can do to active 625 plan. please intimate me by message on my mobile no. 918987172181.
 
Why wud anyone msg u? Anyways call the BSNL helpline and ask them to migrate to UL 625, one month charges will be applied in your next bill.
 
Visit exchange and give a written application stating the same.
 

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