Change payment plan to weekly for outstanding amount.

Good day

My account is in arrears at the moment I can't pay the R1567.92 as agreed which is due on the 1st of each month my outstanding amount is R4798-00. I get paid R2000 per week with other expenses and everyday challenges and expenses I can't afford it so my question is can't I pay and amount every Friday per week because now my wifi is off and when will it be paid up if i can't afford the monthly agreement amount and my monthly installment is R649-00 per month for my month to month contract.

Your response will be appreciated.