Firsthelp

My husband overturned with a car, and the 2 tow trucks from First Help arrived on the scene and demanded to tow my car, I insisted that they can't tow my car without talking to my insurance, I also explained to them the kind of cover I had on the insurance and the so called J Van Vuuren told me my car is a write off and that the insurance will definately pay, he insisted that I sign the paper so that he can give it to their consultant who will deal with the insurance. I asked him what if the insurance doesn't pay, how much will it be, then he said the consultant will give me all the information but at the moment I must not worry I must just rush my husband to the Dr and let them deal with the rest, I told him I'm not happy and we are all traumatized and here are pressurising me to allow them to take my car. Next day I was given an invoice of over R10 000 for storage, towing, security and I don't know what. I am not happy, as I didn't want them to take my car in the first place and they didn't even want to give me the terms and conditions even when I explained that my insurance might not cover the towing. I have never in my life paid over R1000 for towing yet they give me an invoice of R5200 to take the car from N4 Simon Vermoten to Watloo which is about 5km then charge me for all other things which I would not have allowed had they gave me terms and conditions if the insurance does not pay. I'm terribly disgusted by their service and I don't know what to do