Useless Technician who cannot count

On the 10th of December we had a panic button replaced. Cost of replacement was R109 Labour R773.91 Subtotal R882.91 Vat 15% R132.44

The total R10 153.35 instead of R1 015.35

When calling the company, I've been sent from pillar to post and given incorrect numbers. An hour later no resolution as no one answers nor returns calls from their accounts department.

They will overcharge my account for their technician's ***********. Can someone Senior from Accounts Department call me today urgently to have this resolved? My contact Number *** after 14h30 today