Vodafone — Forced post call/sms pop ups and notifications from Vodafone

Vodafone has started forced pop ups after every call and sms which is a huge disruption to a user's usage. I have DND activated and flash sms disabled and yet these pop up. Vodafone is using this to advertise their plans and value added services. This is not okay. I have reached out to their customer care as well and they said that this is done on purpose and they cannot disable it.