No response

I have been in contact with William Danga (Samsung) and Chris Bruyns (Powercare) regarding the quality of printing from a black toner cartridge I had bought from Game. The issue was pointed out to me by a client a month or so ago regarding the printing quality. At this stage I had about 15% of the toner left in the cartridge. When I print the printing down the centre of the page is fainter than the rest - which makes copying the printed page almost impossible (I type exam papers for a teacher). I now have 8% toner left and have had to replace the cartridge with a new one - which means effectively, due to costs, I have lost about R125 worth of toner. I have e-mailed the difference in quality between the old cartridge and the new cartridge to William, Chris, and Sylvester (Samsung). As the printer will not allow printing beyond 0% I expect perfect quality prints until the very last of the toner! I had no issue with the toner cartridge that came with the printer. No one is bothering to get back to me regarding this issue! Not even so much as an acknowledgement of my e-mails!! I would like to know what's going to be done regarding this!