FAILED TO ASSIST AS PER THE WARRANTY

My cell phone has a speaker problem, i've call in during the year and i wanted to check if i could get a loan phone while i took my phone in for repairs. however i couldn't take my phone in for repairs. i then took it in on the 19/12/2018 considering that the warranty on the phone is ending soon, no one told me that the repairs centre are closed or anything, they then booked it in however i only received an sms on the 3rd of January that my cellphone was allocated for repairs. Then on the 8th i received an sms saying my phone was deemed out of manufactures warranty they they sent me a quote for R9455.42 and today i received another SMS saying that i need to pay assessment fee of R189.75.