Courier Company destroying your image

I placed an order and made payment for my device on Monday, 25.05.2020 i have been waiting since Wednesday for delivery of the device. I know it is no fault on your company, however the courier company are not providing me with any feedback. I have called, i have emailed. My colleagues received their orders before me and they stay a few roads away, even though i placed my order on Monday. The courier company said they tried contacting me and all i received was a 1sec call which they cut, at 17h12. I have my phone on me at all times. I have had to rearrange my days for 3days straight waiting for them. I was very excited to receive my device with your company and now due to the courier company i am just frustrated with their lack of response and making it look as though it was my fault. I do not find this acceptable. I work in a call centre and i understand the pressure...but i also know that customer service should be a priority....and unfortunately this does not exist... please help me resolve this issue. Thank you