Airtel — services blocked by airtel

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Blocking of simcard , Airtel suddenly

Dear airtel officers,
This is dr. Hema, from bangalore, currently working as a visiting scientist at durban university, south africa.
I took rs.6999 roaming plan on 13th april, but my sim was blocked by you on 2nd of may although it was 1 month plan.
Agian i extended my plan for another month thinking that i will get service till june. But again sim is blocked.
I am unable to trace any information about who is using my data.
But i need to contact my people in banglore till june 1st.

How a female can manage in a different country where there is no airtel connection?

Will you restart my services?

Dr. Hema