We had ordered two Moustache brand printer ink cartridges from 123 Ink (Shopper+) The shipping time was a little longer than expected, and when the cartridges arrived, they did not work with both of our printers. I had spent 2 hours following the 123 Ink troubleshooting guide. When I had contacted them they came back with prompt emails stating someone will be in contact with a "Product Specialist"... After stating in the initial email that I had already troubleshooted the issue and just wished to return these cartridges, I was met with directions from this "Product Specialist" After multiple emails back and forth, they stated that these cartridges were not meant for our specific model... So I let them know I would like to send them back. They stated there will be a 30% restocking fee. I agreed, and asked how to proceed with returning these cartridges as well as inquired if I were to pay for the return shipping as well. I did not receive a response, so I emailed again. I have yet to receive instructions on how to send these back. Overall a terrible experience even when we were willing to incur the 30% restocking fee as the cartridges are useless to us. Terrible customer service and very unprofessional. I should have known better after seeing all of the other reviews as well as the numerous grammatical errors on their website/Troubleshooting guide.