A major limitation is the steerer tube length. No matter how many times you cut a steerer tube it won't get longer.
Getting Riser Bars or simply flipping the stem over or getting one with a different rise and reach might give you the added height you need. If you LIKE the handlebars, the stem is the best and least-invasive option as most new ones come with front loaders (detachable front caps) that allow replacement without stripping components off one side of the handlebar. In minutes a Bicycle Shop could swap any number of them onto your bike for you to try.
If you had purchased the bike at a reputable Bicycle Shop they would have fit the bike to you before you took it home.
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A major limitation is the steerer tube length. No matter how many times you cut a steerer tube it won't get longer.
Getting Riser Bars or simply flipping the stem over or getting one with a different rise and reach might give you the added height you need. If you LIKE the handlebars, the stem is the best and least-invasive option as most new ones come with front loaders (detachable front caps) that allow replacement without stripping components off one side of the handlebar. In minutes a Bicycle Shop could swap any number of them onto your bike for you to try.
If you had purchased the bike at a reputable Bicycle Shop they would have fit the bike to you before you took it home.