TravelStart, Rather TravelStop - Never again

So, out of the blue I get a message from Travelstart that one of the legs of my family trip have changed which could leave me and the family stranded in Addis Ababa for a day. There's no further explanation - fyi our trip was booked almost a year in advance. I then get a cryptic message to say I need to fill in an online form to accept or decline the proposed change, except it appears that they have given more than 1 option. So, I try to use the confusing online form and finally enter a long message - Submit, but no, the Booking ref is not accepted. I then try the airline booking reference, also not accepted. Next, I try and call the customer care number. Oh wow, after holding on for 46 mins I gave up. I assume everything is run by computers because I have found it impossible to connect via any other method. Never again.