Terrible/Poor/Pathetic back up service

I bought a car from We Buy cars and their back up service is terrible. I logged a call on the 03-12-2022 and was told by the site i will get a call withing 24hrs to assist with my complaint. so i waited and waited eventually on the 7th I called in and no one would help because it was assigned to a person that couldnt be reached (They tole me he would call back). which he didnt and then on the 8th i eventually got ahold of him and asked him what was happening he had told me he had a back log and was dealing with that first. WOW a 5 day back log on complaints, no wonder their service is so bad, they really dont care about their clients. To this day i have called in 7 times while they called me once on the Friday because i had called before that and showed my anger. On the call on Thursday i was told they need to inspect the car and was told they would tow it to their premises and inspect which meant that this would have been at my own risk as they say they will not be responsible for any loss or damage to the vehicle while on their premises, so i told him i will take the vehicle there myself just m,ake the arrangements and he said on he will speak to the manager there and he will make sure they arrange for a mechanic to be waiting for me to check the vehicle and not to my surprise i get there and no one knows anything as the manager is off sick and he is actually working from home so i wait yet again in the springfield branch for 2 hours for nothing. i am then told on Friday that the HO is awaiting the invoices from the repairer and i think to myself why are they asking the repairer for invoices when they should have it if they paid them for doing a job which makes me feel like something fishy went on here.

All i want is to Change the vehicle and to a more expensive and reliable vehicle because technically i have the vehicle for 5 months but in that 5 months we buy cars had it for just over a month. because they day i was supposed to take delivery the water bottle was broken and the car was running and being test driven without coolant or water and the day i took delivery the car was making a whistling noise and then wen i get the car back a month later low and behold its the same noise and i have to take it back again and this time it comes back with a different noise and now the water is mixing with oil in the water bottle which they replces but never check and fix properly.

Today i call 2 times and the feedback is i have received the invoices and sent it to HO but i cant tell you when they will give feedback which makes no sense if they say ur log should be complete in 3 to 4 days.

It is also a point that once the car is sold and you sign you are fogotten about.