Mustek *****ulant conduct

I am writing this review to expose the *******ion of Mustek Computers in Midrand. Our company buys so much computers and hardware from Mustek, we buy atleast 5 laptops and 10 peripherals every month. It seems Mustek Warranty dept is a complete stuff up. I took a warranty Hard drive back for repairs, ASKED the patron behind the desk if the unit was under warranty, he claimed he could not tell me, I needed to book the part in. Then a few weeks later I recieve an invoice of R184.00. Now this could be justified, the Computer hard drive may not have been within the warranty period. I spoke to my boss about it and he said I was supposed to call in and ask about the warranty. Here's where it gets interesting, I have a unit which is definitely warranty, the laptop was purchased 3 months ago. Upon calling Mustek, the Warranty agent claims it must be booked in as well. I'm not falling for that again. I am not paying R184 for bad service. I hope my boss stops purchasing from Mustek now completely if their after sales service is so underhanded. I have now received a legal letter from them. How can I pay for something that I am receiving back faulty, a warranty check is a few key strokes on a computer.