Call Centre Agents - Pathetic

The delivery address on the DPD Laser tracking page is incorrect. When requesting an agent to call you, they do not (I have requested twice now). I then went ahead and called the call centre so that the incorrect address can be recitified and the agent said "Please Hold" and then proceeded to cut the call. He did not bother calling back even though he read out my number to me and I confirmed. I then called again and an agent, Bonolo answered, where I requested to speak to a manager. Her attempt to locate a manager to assist me was shocking to say the least. She did not offer to take my details to get the manager to call me either. I suggest a senior member of staff call me immediately because your agents are a sad excuse of a representation of your company or is your company just dysfunctional?