Order cancellation

[Maan1111]

I have my Vertragsverlängerung wirh iphone 17 promax done last Oct. 2. i want thaz prder be cancelled and just maintain my previous contract with vodafone. How can i do that?  

[RobertP]

https://www.vodafone.de/hilfe/alles-zu-retoure-widerruf.html