Bad service from AutoStyle Motorsport

I order a part online and they said they have stock, when i enquired later on what is happening with my order (order#365517) they said that they dont have stock i asked them to refund me, i sent them my banking details on the 14 november 2019 as to yet I have not received my refund, i called them and they cut me off, this is really bad doing this to customers. i called this number *** and their whatsapp number which just say call the contact centre. Please help me get my money bac****!