In your customer area there is some otpions you can tick off to receive certain calls.

Good suggestions @Guimas , I tried to do it in app privacy settings but most of privacy options gone after I terminate co tract with NOS :(

Good night @IVAN PADABED,

If you don’t have a contract you can’t restrict the contacts from marketing.

Please double check if you can find this options.

Thank you

Thanks @Jorge CC, the article you shared was useful, but unfortunately it confirmed that I cannot opt-out from marketing calls from the App. :(

My work around so far is adding NOS number to the phone Black list, so far so good :) 

Hello @IVAN PADABED,

Thank you for reaching out to us. The community shared a good help regarding this matter.

Please let us know if you keep getting any more unwanted calls so se can take further actions.

Thank you