DPD UK review: Dpd local - UK

I was expecting three deliveries from dpd local through Mon-Wed. (today). I received the first one on time.
The second parcel was sent by the same sender as above. But with a different delivery driver instead. I got a message saying that this driver ( Name-Safi) missed delivery as there was no one at home to sign. I was home through this morning expecting this delivery and no one turned up at my door to deliver this parcel. I am unsure why the driver would lie and skip the delivery in this manner.

The third parcel was to be delivered today between 8 to 12. Originally, it was to be delivered on 26th Oct. When it hadn't arrived by Tuesday, I called up Dpd local customer services and the lady assured me that it will be delivered today ( 28th Oct.) between the above mentioned hours. But nothing so far.. I tried contacting customer services and unfortunately there's no option to speak to an agent. I tried competing a form online, only to be prompted that there was an error in form submission. Customer services is non reachable!
It is absolutely appalling to see this level of poor service offered to customers and senders alike. If drivers are over burdened with deliveries, us customers should not be facing the consequence of that. I have now raised an official complaint against this. Fingers crossed.