UPSET CLIENT

I am extremely disgusted with the service i received from you guys,i called in yesterday with regards to a data query on my contract that i recently upgraded.I was assisted by a very polite young lady who ensured me that i will be contacted within 24/48 hours and a query has been logged.I do see that you guys have been trying to contact me and i am at work and therefore missed the call.I tried calling back just now and went through a consultant who said she will transfer me to the relevant dept only to go through to a voice recording saying the number does not exist and i get cut off.I call back again now spoke to another consultant who informs that i wont be able to speak to this dept as they work at the back office and she will get them to contact me,confused i then go on to question if i am busy at work and they cannot contact me will my query not be assisted to and the agent replies to say the query will be closed and i need to call back .I am soooo frustrated what kind of nonsense is this,we must call in to complain and then when we call to follow up this is the service we get,i did request they contact me @ 1pm regarding this query or i will surely consider changing my Service Provider.