Mahanagar Telephone Nigam [MTNL] — Calling balance used for internet when 3g data balance available

Address:	Mumbai City, Maharashtra, 400051
Website:	mtnlmumbai.in

My complaint is against MTNL mumbai which as follows:
I had 3G data balance on 9.5.2016 which had expiry on same day. When data balance was 37-25MB, I recharged again by amount Rs.152 and the balance get added. This was also confirmed by dialing *446# which showed two different data balances having two different expiry /validity dates. That time I also had calling balance of Rs.207/- in my account. But as I tried to call, my balance was zero. So i called customer care since 3pm to 8pm. Many times calls get dropped by MTNL's poor service when i was in pune city. As the executives told me that there was no data balance on 9.5.2016, so your calling balance has been used. But it's not true, because I confirmed the previous data balance availability before and also after recharge of Rs.152/-. My 3G data balance was never zero on 9.5.2016. It should be checked by MTNL how many times i have checked the data balances on 9.5.2016 by dialling *446#.. If it wrongly showed by dialling *446#, it's not my mistake, does it mean that *446# is not reliable? I have not used my calling balance since i recharged it by Rs.200/- I remain always alert for my calling balance should not be used for internet. So Please help me so as my calling balance get credited by Rs.207/- at the earliest.