Airtel — cannot make call from postpaid number

Address:

Mumbai City, Maharashtra, 400031

I can not make call to any one and if anyone call me even my cell is in full network they here recorded message that the number you have dialled is invalid. I have lodged complaint with airtel so many times but noting resolved.

My communication is fully stuck due to this. There is no guarantee that i will be able to call any one as at any point i here the number you have dialled is in vaid. If a person is just besides me then also i heard this message.

So may people complaint that my number is not reachable even though i am in at one place only and my mobile shows full netwrok.