Update. I eventually got through after 20 minutes on the second attempt to contact SAGA on the number given for river cruises. It turns out that to book this Nile cruise (Africa right?) I need to phone the number they give for European holidays. I phoned and immediately hung up on learining that the wait time was likely to be one hour. I wonder if any SAGA representative monitors this forum. If so thanks SAGA for wasting 50+ minutes of my time on hold. You really need to make it clear which number to use. Fortunately at least two other companies are offering a very similar cruise early in 2023 so I will be contacting them.