Medlife — They are not returning my refund amount

I have ordered medicine from cheater medlife app and they sent me the wrong medis so i re-ordered the same medicine ..again they had sent me the wrong one..now i hv 2 wrong medicines with me to return.. i have to forcefully return the medicines bcz they are wrong ones..They had picked the wrong medicines from my side but till now they have not intatiated the refund of amount 340rs to my bank account.And it has been two months.
Even i had ticked the option in the app, , if the medicine may not be available then let me know by the call..but they didnt bother to inform.
I hv wrote many emails in this reagard to medlife app but all is in vain..
Please help me i m fed up with their behaviour ..this is happening to me 2nd time.