Trojan after sale service

Sent a e-mail to Trojan for a spare part on a bicycle.Tshego sent a catalogue so i can order the part.Identified the part number and sent it back to her for price and plan forward.Three days later still not a word from them.In the meantime phoned a number that Makro gave me,came out by Laser logistics,and they can't help me.Gave me a number to phone Simon.Have been phoning him for 2 days.Voicemail all the time.Left numerous messages to phone me back.No joy....Trojan South Africa must be the worst company for afters sales service.I am so disapointed that i bought this exercise bicycle and not another make.