no answer

I noticed a suspicious transaction on my account that I definitely did not do so I try call the contact centre.<br> A receptionist answers and tried to divert my call to the correct department three times but no answer. <br> Eventually she gives up and says I must call back in an hour.<br> <br> I don't think I need to be part of a bank that cant even answer an important call. Clearly I'm not important to them.<br> So what do I do now?