Apollo Pharmacy — excess payment taken, detect in invoice observation

Address: RABITIRTHA, P.O.- BUD BUD, Dist- PURBA BARDDHAMAN, WEST BENGAL, PIN- 713403.

Sir,
We, Husband & Wife are patient of Apollo Hospital, Chennai vode UHID No-AC01.[protected] & AC01.[protected] under Dr.SUBRAMANIUM J R (MD). After completion of our treatment we moved to Apollo Pharmacy Counter at Main Block for medicines.
Kindly check the enclosed Invoice and Card Payment Slip vide Invoice terminal No- 15268CC0321195, Dated 27/02/2020 at 07:42:15 am, and as Total Bill for two patient medicines is paid in a bill through Debit Card, the payment slip also enclosed herewith, Kindly find in Invoice line 3, QTY( Quantity)corrected by pen from 120 Nos.to 60 Nos. but the pre. Calculated amount not corrected accordingly from Rs- 2436.00 to Rs-1218.00 for which an excess amount paid my me in your counter through Debit Card. and we are getting only 60 Nos. Capsules inside the Brown packet after opening at home at West Bengal.
After observation if you think my claim is correct then it's too great for me if you arrange to pay back the excess paid amount of Rs- 1218/- as we rely on the cleanliness of your organization and for the same we always remain grateful before you. Enclosed:- 1) Photo of Invoice, 2) Photo of Card Payment Slip. I will give another details for refund if you kind enough.
Yours faithfully,
Anup Sengupta & Tapasi Sengupta
e mail- [protected]@gmail.com
Contact No- +91 [protected] (RMN)