In the German configurator they don't mention rSAP with the "connect" option. Instead Audi offers the "phone box" to help with receiption problems.
Indeed it looks like there is no rSAP available in the A3. In the A4/A6 options there is "Audi connect including car phone
". It is very hard to understand all those different Audi phone options!
It's a shame that a free SIM card is not included when the "connect" option with all necessary other options totals 4000€