Hi
Did anyone ever found that a digital phone dial double digits?

for eg. if you dial a 2 the display show 22 or if you dial 0 it shows 00?

Never seen that on any digital or ITP phones. Suggests a faulty handset to me.

sounds like sticky keys-teas and coffees most likely

Never experienced such kind of issues yet, but reading your issue I am thinking about will this kind of really occurs.

It's really strange.