Phoned today to query a number of billing items. Was on the phone ages and kept being passed to different staff for separate items. Staff were in very noisy call centres making communication difficult. The 4th advisor asked me to hold on for a brief period while she sought the answer; after 35 mins I was cutoff. Redialled and had to keep repeating myself to 5th advisor who then kept repeating same answer which meant she did not comprehend the query. Requested yet another escalation merely to seek someone who could understand. Very frustrating and poor service. Only staff no 1 dealt with the first query well and efficiently, after that all went downhill.