Which ITR to be filed

If your Salary income is a major part of your total income, and business income (mobile recharge, dish recharge) is not substantial in amount, than you can file ITR 1 by showing business Income as income from other sources.

Sir business income is more then salary
salary is only 3 months

If the income from business is going to be substantial, every year and year after year, if it's regular in nature, like this year and thereafter if every year you will going to receive this income, than such income shall fall under income from business.

it's commission in nature like you are charging some commission to do recharge of outside party, than you can file your IT return in form ITR 3.