It seems from the history that you are having sore throat
and diagnosed with tonsillitis
Tonsillitis is an infective condition most commonly caused by bacterial infection.
The treatment of the condition is by use of antibiotics and antiinflammatory drugs.
The condition is not responding to two courses of penicillin indicates that the organism is resistant to penicillin.
Hence you need to use antibiotics based on the culture and sensitivity report.
Hence I advice you to consult your doctor for prescription of drugs accordingly.