Travelstart customer service

Very poor service. Sent an online enquiry to which there was no response on. Then phoned them this morning and spoke to Nwabisa this morning. Asked her for revised copies of 3x Invoices for ZA***3, ZA***1, ZA***4, of which I only received 1x per email of the revised invoices, which was for ZA***3. I responded to her email requesting the other outstanding 2x invoices, to which I did not get a response to. I phone the call centre, asking to speak to Nwabisa, to which the operator said that she will help me, as Nwabisa is busy on another call.... then she is not being able to help me because she needs the email address used when it was initially booked? Can I please have the the 2x Invoices for ZA***1 & ZA***4 sent to me as soon as possible. Nwabisa have confirmed all the details this morning and sent the emails, but it did not reach me.