Total let down!

I called Dawn Wing to change the address of my parcel. Due to internet issues I accidentally placed 2 orders for the same address. The lady was very helpful and assured me that the address will be changed and delivery would take place the following day. Today I received a message from my client saying she has received both packages and in the mean time my mother is waiting for hers. When i contacted Dawn Wing to address this, they said they would escalate it and get back to me. I am still waiting for feedback and my mother has still not received her parcel. This is not the 1st time Dawn wing has let me down. This is such an inconvenience and I am very disappointed.