CELL PHONE SERVICE QUERY.

I bought a phone Samsung A20 from Mr price in may 2020 in October the phone froze, took it back to Mr price they said they need to sent it to Samsung . In January 2021 after following up with the store for months was told my phone had water n I need to pay for the repairs. I asked the assistant why would Samsung take three months to see that the phone had water. In February they returned a phone with a letter from Samsung dated 13/11/2020 and the details on the letter did not correspond with the details on my phone. Spoke to the store manager querying the time delay the details that does not correspond he said I must leave the phone he will follow up with Samsung, where I come back he said this people are lying they said it doesn't mean the phone contacted water it maybe sweat and when he ask about details the does not correspond they couldn't explain. I ask him what must I do because I tried calling their head office but couldn't not go through n their customer care line. He said anyway they can not help me. I asked him what exactly happened to my phone because I am not even sure that this phone they return to me is my phone and if Samsung rep**** in November why is it only returned in February he also doesn't know. The manager did not know anything or even try resolving the issue. He just said they can not help me. Please help .