Siri has become buggy since iOS 11

Siri is behaving very strange since the last iOS update. When I do a search for anything Siri comes back with an odd string of text which it verbally says. This happens with everything I do, for example if I ask it directions it will say something like " $ underscore asterix", then repeats my search term. Also the map app has gone completely crazy with gibberish followed by my search terms.

It is as if it is drunk and is saying a bunch of gibberish before it reports its findings on my search whether it is a web search, map search, music search etc. 😕