Phone Net Connection

[Cool Water Palace]

I recently discovered the phone net card.

When it works it's ok, but other voices in baclgwround. I often get messages that my account number does not have enough digits. I phoned the help line, but was told 'nothing wrong with card' I'd already said it works sometimes.

Any ideas, and are they covering up a problem? The first time there was a violent electric storm raging, so I thought that could be the problem, but it's happened in all weather conditions. When it is supposedly too short, I only occasionally get it to work by retrying.