Frustrating service by Mr D

I am so mad, I have always vouched for Mr D because of their reliability. As much as iv always been cautious with linking my banking details to the app, I eventually felt safe enough to, only to have my money taken and no food delivered. I have been trying to call Mr D the whole day to get a refund. Ended up spending even more money on airtime. The customer service center is not attended to. Iv logged complaints on their website and on the app, nobody cares. I just want my money back because I didn't get the food