On 240409 ADT's technician Andries made an upgrade at our shop in Midrand. We accepted a quote for R1751.04 but after the installation was done, the quote was changed to R2707.50. The shop manager that was working there at that stage received an Invoice, but when it was given through to our office in Centurion, the amount was changed and it was not signed as acceptance. We would like to know why has ONLY the amount been changed when nothing else did. Not the service nor the equipment. We would gladly pay R1751.04 since that was the... read full review »