Do not honour their workmanship or guarentee

Doorpro -Unit 18 Westar Bussiness park, Stormill, Roodepoort. These guys fitted a used roller shutter door - and charged us a whack for a pile of new parts etc. and were adamant that the heavy door operation would get better as it got used - and we were not to worry as they guaranteed their work so would fix any issues - I have now been trying to get them back to fix a broken spring since November 2021 - that they fitted - and the door is a danger to staff - but they just ignore my requests .