Mecer needs to stop blaming customers for bad products & service

My elderly father paid cash for a Mecer laptop with Windows & MS Office from MTN Port Alfred. He only gets R3000pm pension & saved for months to get a new laptop as his hardly works as too old. We brought it home switched it on & a message "Just a minute" turned into nearly 12 hours. The laptop eventually went blank & then a Defaultuser0 screen appeared wanting a password. We had not received any passwords with the laptop nor did the consultant mention any when we purchased the laptop. We tried a few default options but these did not work. We then googled to find advice. This is when we found out that the programs did not load correctly & there was no way to bypass this screen. Some sites advised some options that may assist but all stated that the laptop needed to be reset which would delete all loaded programs. We returned the laptop to MTN & they sent to Mecer for assessment, a month later we received a message that a replacement would be sent. We went to MTN over the weekend to collect only to be told that Mecer now wanted our permission to reset the laptop & wipe it clean. This is not what we purchased - we purchased a laptop with Windows & MS Office & not a blank laptop that does not work. We were also told by the consultant the Mecer technician was blaming us for locking the laptop as "we fiddled with it". All we did was switch it on & the computer locked itself!!!! My father paid over R6000 for the laptop & has nothing to show for it. We asked that the money be returned if a replacement laptop is not provided & we were told that a refund would take time -- this is unacceptable and definitely not customer service or providing the best products.