WORST SERVICE EVER!

I am very shocked at the level of service I received from the agent yesterday, I called the number *** yesterday around 16:40pm worst 15minutes in that call, I used my work number ***. I did not get the consultants name however the consultant who answered had had me holding for 2 good minutes before attending to my call. Eventually when she came to answer she brought the conversation she had with her colleagues' with her. I then asked is this how unprofessional the service is and she brushed me off by requesting my details, ok moving on. My complaint is not in regards to the reason why I was calling but how displeasured I am with the service the consultant provided me and had requested to speak to a team leader or manager. I do have the right to request not to be put on hold in which she did but did not mute herself, I could hear the full conversation she kept having with her colleagues about how I wanted a manager and what the issue was, laughing, joking and I heard it all. If it were me doing QA of that call from the 1st 3 minutes of hearing that call it should be 0%. I am so shocked as to this is how clients are treated!!!!!!!!!! Please look into this IMMEDIATLEY