********** by Apple and terrible customer service

My apple ipad air 2 stopped charging in May 2020, I contacted Apple and they advised the unit must be sent in for repairs to the CORE Group. The CORE Group could not advise why it would not charge and they quoted me R6300 to have it replaced. As I was working from home and use the ipad for work, I was desperate and paid this, not knowing I would be given a refurbished second hand ipad as a replacement. During November 2020 (6 months later) this ipad would not connect to wifi, bluetooth or even mobile data. I took the ipad into the istore Cresta, and it was again sent in for repairs to the CORE Group. Again, I was provided with no reason as to why the ipad was doing this and was quoted an amount of R7,189.69 to have the ipad again replaced. When asked for a insurance letter the letter could provide no reason why the ipad would not connect to wifi. Thus in 6 months the only solution I was offered by Apple was to spend to R13400 to receive inferior quality replacements whoich would proably not even last another 6 months. For this price I could have bought two brand new ipads. Both claims were also rejected by my insurance company. I find this level of being ********** by Apple completely unacceptable. When I asked if I could please escalate the matter I was given a apple support number, which I phoned and reached a lady in Albania, who could hardly speak English. It took about 30 minutes to just get my name and surname and serial number of the ipad right and explaining the situation to her. Then she transferred me to a man based in Athens whose English was even worse and he could not understand what I was saying to him. He mentioned that noone can assist me and I must write a letter (not email) and send it to an address in Ireland. I cannot believe that a tech firm such as Apple has such appalling service. I am at a complete loss with regards to this.