*********** call centre agents

After noticing that i have missed my delivery which was scheduled Monday 18 dec '17 I contacted the North Riding courier Mr Edmond. He informed me the delivery will take place in the following morning, I then contacted him around 09: 00 am, he told me he didn't have my parcel and it is still at the depot and assured me delivery will be around 3pm the same day. I then checked the status of the delivery which indicates that there is some problem with the delivery. After that I contacted call centre to find out what the problem is and the new scheduled, the first call centre agent transferred the call to another agent who then put me on hold for 5 minutes until the call ended , then I decided to send an email . I phoned again two times this afternoon, I spoke to one of the agents who transferred the call to another agent, a gentleman, who hung up the phone while I was still talking, I phoned again and the same thing happened. I tried to contact Edmond to find out if the delivery is still on for 3pm as promised and the phone kept ringing with no response. Up to this point I still don't know what's going on with the parcel and when will the next delivery take place. I don't know who to contact as I have exhausted all possible options and still no response .