most americans call citalopram by the name celexa. that might help you get more responses. and you can search celexa posts on this site--there is a recent thread about it.
getting back to your problem...in my opinion your current symptoms were not caused by celexa. i think these problems you are having are the result of your illness not meds. problems don't go away because we decide not to treat them and find the side-effects of our meds disgusting--which they are.
when you quit a med you tend to feel better for a little while because there are fewer side-effects and some med is still in your system helping you (because these meds have half-lifes of a few days.)
i took celexa for a long time. now i am on its smarter brother, lexapro--which is probably called escitalopram where you live. lexapro has fewer side-effects and costs more. one side effect i suffered from on citalopram was the dizziness you spoke about. it is due to low blood pressure as a result of the anti-depressant. one way to deal with it is to drink beverages that have some salt--electrolytes really-- like gatorade. bananas in your diet can also help restore you potassium levels as does apricots.
my low blood pressure was addressed partly by learning how to get out of chairs more slowly. stuff like that. low blood pressure leads to dizzyness in the form of when you change your body position like getting up to fast to walk. it's called postural-hypotension. **that's a phrase you can google**
best regards
-pi