Improper work done and damage to car

My rear windscreen was shattered, I logged an insurance claim and I was directed to PG glass. My glass was replaced by the mobile department on 21/12/2018. I was advised to go to my nearest branch to get smash and grab installed. On 12 January I took my car to the Midrand branch, I had issues with the service received. Once my vehicle was ready I reported that they had damaged my rear headlight as it was cracked. This was denied, but I reported it to my insurance. It rained on the same day after smash and grab was installed, when I opened the boot door it was heavy due to water being inside. I then reported it to both Santam and PG glass. A mobile technician was sent and on Friday 25/01/2019 who removed and replaced the rear windscreen. It rained once again on Saturday and water still got in the boot. I sent an email with a video of the water to both PG glass and Santam. At the moment, my car has water seeping in each time when it rains which has causing a mouldy odor in the car and the rear headlight is still not fixed. The lack of response and poor service received leaves much to be desired.