Mfc harassment

I bought a vehicle in 2019 and Covid happened in 2020. Im self employed in Cardiology medical field. I fell behind with my installments but allways paid an amount towards my account. I get called by their call centre from Modimolle every single day. The call gets dropped and i have to repeat the information sometimes twice a day. I attend to patients and cannot take these personal calls wich are made every day!!!!! And sometimes x2 a day!!!! Because the call gets dropped. I find these calls becoming harassment now.