City of Cape Town Refuses to pay Refund

I sold my property, transfer took place November 2020. Transferring attorneys paid over more to get the Rates Clearance Certificate. R9900 to be exact. Then they send me my final bill Dec, fabrication an Electricity amount for the month, to the vlue of R7000+, to just get out of refinding me. I requested an immediate reversal, based on actual readings. Finally got the Correct Final Account, now I must BEG for a refund. This City is quick to ask for money, and cut your water, but when they owe you, its first this stort, then that story. I am beyond frustrated!!