Can’t get through to Lufthansa Miles & More credit card service ?

Are having an issue trying to contact the German team at Lufthansa Miles and more credit card on the following number
069 – 667 888 700
Basically what happens is at busy times (read all the time) and you are told to call back later when they are not so busy. The issue here is that they just disconnect you, and you are left high and dry. So if it’s an emergency, or you don’t mind being on hold, there isn’t anything you can do. After doing a bit of poking around and checking I saw that you can try this alternative number
069 – 667 888 500 


I think this is for the Miles and More Gold members, but it’s not advertised as much.