1st for women poor communication and contact details

I made an accident on 27 February 2022. My claim was approved and everything seemed fine. The company repairing my car realised that there was more damage than initially observed. The car was going to be completed on 1 April 2022, but the assessor came down to assess the car last week and saw the damage. The car will not only be completed by the end of April. I have a rental car, but i requested that the rental car be extended due to the completion date of the car changing. Ive called 1st for Women several times in regards to this and no one could help me. the communication is very poor and i have no idea who to speak to. Auto Magic George and the assessor were really eager to help and provided great service. But the company "1st for women" itself is really hard to get hold of. Ive been a loyal customer for more than 3 years and this is my first claim. Really disappointed. I literally only want someone to assist me in extending the car hire.