After 4 calls no service

HAD problems setting up voice mail box because of incorrect instructions with phone. Phoned call center .selected customer care no 1 twice and given incorrect instructions ,I then phoned and selected no 2 f<br> or technical .At last i got the correct information ref no FCR*** .When I tested the system I got an automated error message to tell me that my service has been suspended .Phoned call center again spoke to technical person .She said system was fine .I asked her to call me back to test system.She never phoned me and never fixed system.I then sent a email .I now have to wait up to 3 days for a reply. These operators do not care and their management is no better.<br> I can make calls but not receive calls.