Pathetic service - Huawei

On 10 June 2019 I contacted Huawei for a repair. I used the online portal and registered a service call for a cellphone repair, specifying as per their request the date of collection. Initially I got no response and logged another query. The courier initially arrived with no confirmation and I arranged with the courier for the next day collection on 26 June 2019. Before I handed the phone over I sent an email to query whether previous repairs and after market screen would be an issue. No response was received and the courier collected the phone. I never received any feedback unless I made an inquiry. After 8 days I received a quote for R8975. This is double the price a new unit would cost. The reply to this was that its due to aftermarket parts being fitted. I then asked for the unit to be returned. A week went on of me following up on when the unit would be returned and I was told its with the courier company and that I would receive the unit before the end of the week. On Friday 12 July I got the same feedback, but asked the agent to check when it will arrive, he returned and told me it was still with the workshop and never sent. I asked for a manager to call me and to date no call was made to me. Pathetic service throughout the process.