Bad service, horrible

I bought a phone from Rentoza in November 2020, it was a combo deal so I took it with a friend of mine.... He chose a P40 and I chose the P30. So when you buy a phone from them they install Mobicontrol since its a rent-to-buy situation (the phone comes with the app already installed). So we finished paying off the phones in April 2021 as we took a 6months payment plan and immediately after that I called Rentoza to ask the to remove the app (Mobicontrol) on my devise since the phone now fully belongs to me they told me that they are not administering the which did not make sense to me I kept calling but they did not assist me in anyway so I left the issue since the app did not give me any issues. Fost forward 2022, towards the end of August if not beginning of September the app started giving me problems. My phone would go onto Mobicontrol mode and I would not be able to access anything on my phone. I called again and this time I spoke to one of the directors, Chris or something like that, I can't remember his name... His number is registered as the customer service number on their website..... This guy told they can't be the ones administering the ap and what not and I asked who then is doing this coz I bought the phone from you guys and it came with this app. He promised he would give my details to the customer care agents to call me so they can assist. To this day nothing has happened and its an everyday struggle for me access this on my phone even worse this app is now removing some of the apps I has installed. This is such an inconvenience as I can't even access my emails yet I had paid for the phone in full.... I am very disappointed and furious at Rentoza and their service, I would never recommend it to my worst enemy