Incovenienced/Over Charg due to their Incompetence

I sent my device to this store and they told me that initially Insurance won't pay I intervened Insurance then said they would pay. Get a message that device is fixed and that accesss is R200. Went to the store fetched the device paid teh R200 access fee. Get home cos the device is used by my Son , he tells me the stuff is not fixed. Now the inconvenience of againg taking time to return this device to this store and find out why they dispatched the goods and made me pay the access only to find that it was not fixed, they said on the system it says it is a write-off and they did not check this. Now they book it again and are requesting that I prodice a receipt that I paid the access,. Should they not have this info as I paid via a debit card. I am sure I can get this proof if I go to my banker, but I asked to speak to the manager and he keep sending his staff to talk to me. He is avioding me basically. All that I want to reiterate is that He is not doing me a favour I am paying for this and He is ****** inconveniencing teh **** out of me. I am also a busy person don't have time for these stuff ups.