Saprepaid meters, robbing business

I procured electricity prepaid sub-meters in 2021, they’ve never rendered a single service to me, no statement nothing. I paid a lot of money buying electricity and was getting about 25% or even less when I have tenants who are buying electricity. I received all the meters in May 2026, guess what, they demand that I bring the meters back, no refund and demand that I have a contract with them which I never signed for. I was told that the terms and conditions is regarded as a signed contract and it gets renewed automatically. The meters are my property, I did not rent it was an outright purchase and they must pay me the rebates that are due to me for all those years. I received very little from them, for R4000 they will give me less than R1000 when tenants are buying electricity