Incredible connection incompetency

My Samsung A13 just stopped displaying on the 23rd of February 2023 and I took the phone back to incredible connection on warranty basis and they took the phone to some company to have it fixed/checked after weeks of follow up without Joy finally went to the store(24 April 2023) and to my surprise they claim the phone was immense in some liquid and now I am liable to pay for it to be fixed or pay R250 if I reject the quote, I suspect foul play here because that phone was taken care of and had never felt a drop of water, my request is for Samsung to please intervene in the matter because I'm a loyal Samsung customer, has been for years and now this...