end off subscription

i had an subscription of an i phone 11 i paid my subscription full end of feb 26 .my phone block i unlocked however i still cant access my phone Couse it said it still under the management of rentoza been speaking with different agents for 2 weeks without any assisted they advised that they will collect the device and open it that was last week till today i don't have a phone which i paid for i full rentoza service is perthitic honestly