Query regarding Salmonella typhi. Issue?

MY QUESTION IS FOR DR. RAHUL PODDAR    Is it true that when typhoid is not permanently cured its bacteria escapes and start residing in gall bladder and cause intermittent problems to the patient resulting in relapses and other problems ? Someone told me that it's nearly impossible to detect such type of bacteria which resides in gall bladder by blood culture or stool culture because they don't show up easily and frequently. What are the antibiotics given to treat such type of complex, dormant & subtle bacteria which starts residing in gall bladder ? When culture can't detect the strain of bacteria so how to select the antibiotic for its treatment ?Which test can detect this sort of bacteria ? I have had antibiotics such as faropenem, moxifloxacin, prulifloxin, azithromycin, cefixime, cedpodoxime and ofloxacin, cefuroxime axetil but nothing has worked till date to resolve this issue. What are the antibiotics which can resolve this issue ? Reports attached with period of 2.5 yrs.