Unacceptable customer service

This company has got to have one of the worst customer service departments / policies I have ever experienced. The company I work for purchased two Konica Minolta printers from them. Since the transaction was made, getting assistance from them has been extremely difficult. One of the machines we have recently discovered is actually broken and does not work. Up until this point we were told it had a faulty part that needed replacing. When the technician diagnosed our printer, it was over the phone and took less than 5 minutes for him to conclude what the problem was. Once the part sent to rectify our problem was installed a new error occurred and we were informed that we would need to wait for more parts to be sent (chips). We were told the chips were burnt out in the machine thus causing the new error. Getting this far with them has taken months and we find this to be unacceptable. We had barely used the machine for a day and it has given multiple errors and has taken far too long for them to make any effort to rectify the situation.

We requested a refund almost a week ago and have sent further mails in attempt to get a response however they have yet to respond to our request..