According to invoice date of 8/26/2010
Order No. 100826-964438
Customer No. 761327
I purchased a toner cartridge (Product COM106) for my Canon MF6540 copier. Installed a few days ago, it worked fine for approximately 500 copies and then began dumping toner making about half the copie page black.
I have done everything I know to correct the problem, cleaning the cartridge and all elements of my copier. Nothing works. The cartridge has failed and is a total loss.

I would appreciate a replacement,

Sincerely,

Donald E. Campbell