stop working before time

i bought tata photon max last month. it's user id is 9235815484. the seller told me first month you'll get 10 GB data but my device was stopped after complete only 3 GB data. i talk to seller & customer care but no one provide me proper ans why device stopped the working before reaching the data of 10 GB. now today it's finished his 1 month but they couldn't solve my problem.
kindly solve y issue.
Mohammad Nadeem
MOb. 9335097185

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