Bad experience with this company

Please beware, purchased roller shutters in Feb 2018 payed them a deposit, only delivered in June(apparently they manufactured the wrong door) , They insisted on full cash payment before installation, once payed they installed a shutter that was incorrectly sized, they then installed the correct one a week later but with no override . So cannot be used just in case the electricity is out. Made calls and emails with promises to fix but nothing has been done to date. It seems that they just ignoring my request.. So just paid 18K for a security roller door that i cant use.. Its crazy..