poor service

i purchased a swiping machine online and i saw their taking their and there is no communication from them. i went and purchase the other machine from different service provider which delivered my machine on time. So i requested Yoco and come fetch their machine since their delivery was late. so they promise to come pick it up in the coming 48 hours, even today i haven't hear anything from them. So please refund me my money and come take your machine. it is now 2 weeks waiting for them. i send bulk of email but there is reply anymore