Poor service from Santam Insurance, Sepanelbeaters, FNB Brokers

Poor service from Santam Insurance and Sepanelbeaters I lodged a motor claim with Santam received quotation and approved. The vehicle was taken to Sepanelbeaters which was chosen by Santam for repairs. I received a form (confirmation of request for fitment of non approved parts from the Sepanelbeaters. It was never discussed with me that the vehicle will be fitted with non approved parts, I queried and stated my dissatisfaction and explanation why they have to use non approved with the Santam and the assessor Appel van Staden the response i received was that they are allowed to use non approved parts. The response does not explain if whether it is choice for them to use non approved parts or standard procedure for all motor claims. I am not satisfied that non approved parts will be used for repairs and need an explanation. I have forwarded several emails to Santam- to the following people Appel Van Staden, Sello Manaka who advised the query will escalated to his line manager and i still have not received feed back and FNB brokers i called spoke to Robyn on 03/07/2018 who advised she will escalate the query to one her line managers they will contact me to give a through explanation.