Samsung and 3G mtn and Ackermans selcourt towers extremely bad service. Dont buy phones there

So I bought a Samsung A10 on the week of 16 december 2019 and the phone crushed on the 1st of January. I took it back to the shop on the 3rd of January and they booked it . after waiting an entire month for the phone to come back , I complained and today they called me and told me its physical damage and I dont remember dropping the phone not once so they are charging me roughly R400 to get my phone back "not fixed" and to fix it they are going to charge me R1500. Is tgis fair , does it even make sence?. AVKERMANS SELCOURT TOWERS, MTN,3G AMD SAMSUNG Just lost a loyal customer and I would have really appreciate if I could get some help