Bad service/courier service

I had ordered 2 packs of acustraps from Outdoor Warehouse on 10 Nov and the order was confirmed via email.

When placing the order, my phone automatically inserts an incorrect contact number and I emailed Outdoor Warehouse to correct it.

I was assured that a message was sent yo the courier to be corrected. Their email also states that a message will be sent to advise when the package is handed to the courier (which was never received) I had to email Outdoor Warehouse only to find out via the tracking link that dpd lazer had already tried to deliver on the 17th?

I then phoned dpd lazer and the lady first read the incorrect phone number, then only after I advised that Outdoor Warehouse was sent my correct number did she read the correct number back to me.

She sent an instruction through to have it delivered yesterday. Again the message unable to deliver came through. Once more I emailed Outdoor Warehouse to try and find out what the problem is as I am at home and had not received any calls.

They stated that the driver said that he is unable to get hold of me on my number (is he using the updated, correct number????) I had also sent alternative numbers only to get yet another message this morning....unable to deliver????? What the hell is wrong with the courier service?