Hathway Broadband Internet mumbai - Refund of Excess payment to Hathway broadband services Mumbaithe tune of 1

I have erroneously paid excess payment of rs *****.*.
Complaints lodged at different levels like, Appalet, Nodal Officer, billdesk, helpdesk & multiple calls on ****...& individuals in past ** days.
Dear Sir,

It was a rude shock to know that there are * payments within *-** min of yearly prescription ***** approx.
Your invoice too indicates -*****

There is excess payment to the tune of *****+

Message on Mobile -

Your Hathway Broadband A/c No: ********** bill for **-JUN-** is Rs.-*****.*. Invoice has been sent on shriranglimaye@gmail.com. Click to View http://tinyurl.com/yczuswx*

Relevant part of Bank Credit Statement. All transactions happened on **th night or **th morning.
**-**-**** *E+** BBPSKOTAK Hathway **,***.** (Dr)
**-**-**** *E+** BBPSKOTAK Hathway **,***.** (Dr)
**-**-**** *E+** BBPSKOTAK Hathway **,***.** (Dr)
**-**-**** *E+** BBPSKOTAK Hathway **,***.** (Dr)
**-**-**** *E+** BBPSKOTAK Hathway **,***.** (Dr)
**-**-**** *E+** BBPSKOTAK Hathway **,***.** (Dr)
**-**-**** *E+** BBPSKOTAK Hathway **,***.** (Dr)

Immediately I contacted Kotak bank credit card department where they communicated that Hathway has claimed all amounts the very next morning,
Subsequently I contacted Hathway ****..... requesting immediate refund of the excess amount to my credit card account. This request was forwarded by customercare to accounts.

My earlier emails bombed Hathway ****,,,,which keeps giving false promises that the case is under consideration. We have escalated the matter & someone will call up Which never happened.

The Basic query is how the system accepts multiple payments for the same account ?
Even if the system accepts the accounts shall have courtesy to refund it at once.

However regret to note that no action seems initiated at your end. I am under stress that I have undergone heart blockade surgery & need immediate funds to cope up with expenses. Kindly Acknowledge this mail & expect you will credit the excess amount to my CC account immediately.
Await your action immediately.

Hope you understand the seriousness of the situation and will do the needful urgently.

Regards,

S. A. Limaye
Mob: +************