Bad bad servicemid

Im fighting a loosing battle with Midrand Storage.

My account was not up to date, I owed December , January and current month February. I received an invoice showing that an amount R2850 is due.

On 31 January 2020 I paid R4500 and on 6 February 2021 I paid R2000. The total amount paid was R6500. From amount a R6500-2800 R2850 , account should be in crefit with about R3600.

This payment did not reflect on their side hence POP was emailed and they confirmed that the error was on their side and they will update it.

I was shocked to learn that only R437. 47 is available. When trying to follow up Im told that I have been owing from September but the invoices and the call from them confirmed that i owed December, January and current month. Please assit to get clarity.