Poor service and missed calculations adding up to Thousands

I will not recommend GR Tax to anyone, have never experience such poor service ever. Because of their poor service and insufficiency with my tax return I had to pay hefty penalties to SARS, always had to follow up regarding progress, eventually months later received calculations - much higher then expected, had to redo the calculations myself and send back to them, without any progress with the estimates I was forced to approach another company, within 2days I received calculations and it was thousands (Not Hundreds of rands, thousands) lower then GR Tax calculations. I immediately requested them to step away from my tax return, as I have not received any level of service form them, plus they nearly cost me close to R40K in incorrect calculations. They then sent me an invoice for payment for their services, the invoice came in x4 times higher then my new consultants invoice. Please think twice before making use of their services and spare yourself the frustration I have had to endured with this company.