Samsung repair - multiple failures in service

Timeline to recap: 12Feb :Submitted phone to Samsung Tygervalley 17 Feb: receive quotation to repair 19 Feb: Accepted and paid in full for quotation Between 19 Feb and 20 March: Had to on multiple occasions go into store to request progress and was told it is 3rd party that is delaying – at one stage was told to contact 3rd party directly!! 24 March - Saturday: Got call from “Head Office task team” to tell me that they are looking into it and this WILL be resolved early the next week (that was supposed to be 25/26 March) 29 March – went onto social media to complain about absolute poor service – actually total lack of any service. Quickly got redirected to tellus@samsung 29-4April – lots of email to and from tellus without any real help 4 April – NOW Samsung has assigned someone to my case and they want me to provide proof that I actually did pay for the repairs – as they cannot see it on the system. 13 April - 2 MONTHS later and still no phone