Airtel — non implementation of rs. 349/- pack on mob no. [protected], in spite of registering complaint also

Rs. 349/- monthly pack was done 27 jul 17. But it's not working on my mob this time while it used to work earlier. A complaint was done on 121 on 15 aug 17, but still the issues is not resolved and my main acct balance has been finished on voice calls and internet uses as l was not aware of its deduction. So kindly resolve the issue by -
Activating rs. 349/- pack on my mob as l have already paid for it. And return the main acct balance deducted during this period as it was deducted by mistake at your end.