LittleApp — this app does not have contact details and they do not refund money even after requesting

Address:	122102
Website:	Little app from play store

I have purchased a coupon from little app however due to some personal reason i cannot visit the store so i have cancelled my order and raised request for refund. First of all it did not updated refund status in one go then i tried again in next day then it is showing status request for refund. (Deal was not expired till that time) even after one week i have not got that amount credited to my paytm balance. Amount was 949 rs.

And after reading so many reviews and complaints seems to be this is a fraud app which only tries to collect money and do not give proper service.
Just trying to make some money by not giving appropriate service.

I want to lodge a legal complaint against these type of fraud. Also google play store should screen these types of apps before making it public.