online service sucks

Basically made an online order and was told it's been shipped, got an sms from the courier company dawnwing that there was noone here for collection of the delivery, however when i call dawnwing 3 days later I am told wrong address. I am complaining about Edgars because dawnwing says they are the ones who wrote the wrong address. Also makes me wonder where they delivered to on saturday if they say there was noone there to collect the order. Please shape up, in this current technology space such errors are of rookie standard