UTI/Bladder Infection Not Going Away.

My symptoms are: > Lower Abdomen (Just below belly button) Pain/irritation/swelling/pressure > Frequent urge to urinate. Passing frequently but only small amount of urine. > Mild burning sensation/itching > Urine apperance is Cloudy/Dark urine My urine culture test reports shows Klebsiella species (MDR) ESBL and Pseudomonas aeruginosa (AmpC beta-lactamase positive) Colony count 1,00,000 for both. Tried some of the sensitivity medicines for 5-7 days including Meropenem (1mg for 7 days twice daily), But unfortunately those didn't worked. The next culture report also shows the same. USG revealed "Multple free floating echoes in the bladder lumen". All other test reports appear to be normal Suffering this for a very long time persistently. Haven't tried any antibiotic combination or supplements. Previously had to undergo catheterization for 3-4 days in connection with hiatus hernia surgery. This is the first time having an UTI. Kindly advice me a correct treatment plan.