Medlife — haven't received the refund yet

I ordered medicines on 4th April 2020 and was promised to delivered them by 17th April 2020. On 16th, I received a message that my order was cancelled without any valid reason. Now it’s been a week and I still haven’t received my refund in my account.
This is not done. I’ve to order medicines from other websites and now I’m out of options.