If the problems are extremely serious this is possible, but not guaranteed. You can only reject the goods if you don’t accept repairs, and stop using them very quickly. You must also tell the person who sold the goods that you are rejecting them, preferably in writing.
← I was involved in a car accident after consuming 2 alcoholic drinks, I panicked and returned home. Once at home I consumed more alcohol, the police then arrived and performed a breath test which I failed. Is it possible to prove that despite failing the breath test at home that at the time of the accident I was under the limit?