Mondo - Very bad service provider

I would like to raise a complaint regarding Mondo’s service. My mother has a phone contract with Mondo and all payments are up to date, yet her phone keeps being blocked. We have been struggling for over a week to get it unblocked.Every time we contact support, we are told to wait 24 hours and that the matter has been escalated, but no one follows through and no real assistance is provided. In the meantime, she cannot access anything on her phone, including important banking services linked to it, which is causing major inconvenience and stress.The customer service has been extremely poor, with little effort made to resolve the issue. We are asking Mondo to urgently address this matter and restore access to the phone immediately