Huawei - damaged the phone & tried to charge more

My wife handed in her phone for a battery replacement at Huawei Canal Walk in November 2019. Somebody at Huawei then damaged the phone (not charging, not switching on, and apparently LCD damager), and Huawei then tried to hand back a damaged phone to us or charge more to fix. Fortunately, we requested CCTV footage which showed that the phone was working when handed in, and in fact was used by the Huawei attendant with no problems. Huawei then promised to fix the phone "at no charge". It is now January, and the phone is still "pending" repair.

The customer service and communication from Huawei, and in particular the Canal Walk Store is terrible. Huawei don't even respond to hellopeter complaints, so anybody doing some homework via this site, please take this as a sign. In future, i will rather take my business elsewhere, than risk a company which obviously cares nothing about customer service.