Came not directly from Amazon, but from a different provider - Quality of the "original" cartridges very bad

So far I have always had very good experience with Canon Original Ink Cartridges.
On my last order they were sent not directly from Amazon, but from a different provider. I was not shown the double, but two individual cartridges just in an envelope packed.
Since February, the cartridges are now in use, and the quality was poor. The first went reasonably, but eventually the printed image was poor although the cartridge was still half full. I then shaken again and performed a cleaning cartridge in the printer, then it went for a few pages more, then she was done (although still half the liquid in the cartridge was).
I then opened the second cartridge and this was the same and has messed me all printers. Something was not right in the two cartridges, either it was rejects or something was wrong with the cartridges.
I will buy in the future cartridges only directly from Amazon with Amazon as the seller.