Airtel — miscommunications leads me lot of problem

I have talked customer service representative and added my another number to my existing plan. My parent number is [protected] which having 349 plan with rs 50 discount. My add on number [protected]. It was communicated to me that yearly i have to pay 199 additional to add my another number and i can avail all benefits which is there in my parent number. I mean i can share my data, talk time etc. Based on that i port my number and submitted all documents. Now i am getting only 150 mb data per month and i am no option to share my data as well. Worst service ever i experience. I will move to other service provider if there is no positive outcome within 3 days. Both number along with dth everything i will change. Never expected this type taped massage whiched was communicated to me.