Added limit to contract twice and still not right

November 2014 I went thru a big exercise to add a limit to my contract and Feb I got a huge bill because the limit was not active. Then I did this again and they promised me this time the limit is in place....now got a huge bill again because the limit still is not working.<br> <br> please send me details to cancel my contract I will go to someone that will get it right to add a limit.<br> <br> tried to phone many times but the phone system and the limit system must be the same system because that too is not working. pathetic.