Bharat Sanchar Nigam Limited [BSNL] — Excess bill charged

Address:

172102

I was subscribed to HP Govt. Plan ph. No. [protected] and a/c no.[protected] and I applied for portability to airtel well in time.After portability after 3 month later I got bill 1558 rupees for just !gb data used for ! day only.but I was subscribed to the plan under which 10 gb data was free with fixed tarrif plan.I was charged much above the minimum tarrif which I have already paid. Please refund exess money paid.regards