Toyota SA

Took my Toyota RAV4 for a service at Vaal Toyota on the 4/11/2024 got it back that afternoon. The next morning when I start my car it struggle to start. From then on it just got worst, one day it really made a funny noise after I struggle to start it, took it back to Toyota and explain to them what it did, were there for about 2 hours they could not fined any thing wrong. It only got worst and I took it back on the 18/11/2024 and told them to keep it there until they could find the fault. When I fetched it on the 19/11/2024 they still did not find the fault. On the 20/11/2024 I left for SunCity and on the 22/11/2024 had to return home but my car did not want to start, I try so many times that I burnt the starter. I am 69 years old and do not have any knowledge about cars that's why I kept my services up to date. Had to have my car towed to Rustenburg Toyota were the replaced the starter and the injectors what I had to pay over R40000.00 for got my car back and they told my son that the turbo also needs to be replaced, but that I can ride it like that it got nothing to do with the starting and riding normally with it. Now it are doing exactly the same and last night it again did not want to start. Please help me