"Refusal of testing for repeated Helicobacter Pylori Infection"

I have a history of two bouts of Helicobactor Pylori infection. Last one was a year ago 

Within months of the anti biotic treatment ending I was experiencing symptoms again. 

I asked for a blood or breath test to confirm that the infection had returned, but I was refused this. The GP blamed ‘stress’, virus and some other unjustified statement as responsible for my symptoms through last year. By January 2020 I was very ill. Vomiting, extreme lethargy, nausia and unable to eat even small amounts of food. 

Eventually Wishaw General ordered an endoscopy appointment for a months time. I telephoned the Endoscopy unit and asked for a sooner slot, which was available in two weeks time. This confirmed that I did in fact have the infection again. This is my 3rd bout of this infection. I have been given a weeks supply of antibiotics via a telephone consultation I had to request following a letter from Monklands hospital advising me to see a GP, Surely one weeks supply is not enough since I have two episodes of previous infection! 

I feel I was constantly fobbed off by the GP. If the test had been carried out last year when I first requested it, I would not have had to endure these awful symptoms for 10 months.  I have no faith in the service I receive at this practice because of the irresponsible way I have been treated. 

Any advice on how to avoid this ever happening again would be most welcome.