WORST EXPERIENCE EVER - ALUM IS HORRIBLE

Worst customer service ever from Alum who apparently happens to be delivery manager, what she is delivering is beyond me. My car was booked in for bumper replacement and wasn't done properly, called HO and was told to take it back and speak to Ilum. Day that i'd made an appointment to take it she was not in her office but i waited, she came and passed me by the coffee station without a greeting, pressing her phone and boom into her office without acknowledgement, i complained to another lady and then she came out and apologized. Showed her their mistakes and marked the errors for reference - Got my car returned back to me in a same state i had taken it in. The errors not fixed, my bumper is still not level, the silver lining is still up and pulling off, the gaps still visible when you open the boot and even came back with a scratch. The driver that brought it was a witness and thank goodness he took pictures and sent to her - WOW! TILL TODAY SHE NEVER CALLED BACK TO ACKNOWLEDGE, I CALLED BACK FOLLOWING WEEK DOING HER JOB FOR HER AND SHE STILL TELLS ME TO TAKE THE CAR BACK. FOR **** SAKE WHY THE HELL DID YOU NOT DO CHECKS ON THE CAR GIVEN THE BASIS I BROUGHT IT IN??? YOU'RE BRINGING MERCEDES BENZ BRAND TO DISREPUTE AS YOU'RE NOT HONORING THEIR BELIEVES. I'M IN CUSTOMER SERVICE MYSELF AND SUCH BEHAVIOR IS OF A PERSON THAT DOESN'T KNOW WHAT SERVICE DELIVERY MEANS & MAYBE NOT EVEN QUALIFIED OR EXPERIENCED - SHE'S TERRIBLE AND DOESN'T RESOLVE ANY THING.