Indane — Cheating without giving proper change

Address:

189/3,Meenakshi amman nagar 5th street North,, Surya nagar

Respected sir, I am an indane customer. yesterday(23/07/2020) i was delivered a refill cylinder which i odered the day before(22july 2020). the delivery person asked me for an otp. since the registered mobile number was my father's i was dialing to him to ask for the otp. Meanwhile he gave me the change(i gave him a 1000rs and the bill was 635+45=680. but he gave me change of 220) which i did not check properly. i gave him the otp and he left. later when i checked i did came to know he hasnt given me the proper change. i could not get back to him since he left soon.