Disappointment with Opel

I drive an opel crossland x automatic 2021 model. I service at Meyers king williams town and am up to date with the service. I started experiencing problems after my 60km service which was February 2024. An engine oil light appeared a month after service and I brought this up with them. They advised me to top up every 1000km or when engine oil top up sign appears 3 times for warranty to react which I did. I'm March 2024 I was informed warranty had approved an engine change. I was told to wait for the engine to arrive from opel. I'm still waiting and each time I ask they don't have anything tangible for me except to wait. I'm so frustrated because I don't know when the car will die on me. I can't do without a car as I'm physically challenged so have to put in leave at work when the car is for repairs. I can't plan anything as my mobility is at opels hands. Please assist me I'm desperate. Regards Noxolo Nkonyeni