TELJOY REPO AFTER PAYING FOR YEARS

after 36 months of paying for a fridge OVER R20K, i agree i had some arrears, whic we paid little by little, teljoy kept billing me the full amount even after the 36 months had lapsed, as agreed, now they sending their agents after me to collect the fridge from after 3 years of paying, as they say i owe them money, even though the rental had been terminated months ago, due to the 36 months lapsing. im all for paying arrears within the 36 months, but they want me to pay every month as well after the 36 month period. CAREFUL WITH TELJOY PEOPLE, ITS NOT 36 MONTHS CONTRACTS, ITS AS LONG AS THEY WANT IT TO BE, few months ago I asked for a recon, on it it showed 0.00 balance, they still kept billing me after that. now they want to repo a fridge i have paid for for 3 years R800 a month. i have sent numerous emails, made numerous calls, but im ignored and told nothing they can do they taking it back.