Incorrect price given

Hi,<br> Recently I had release bearing failure on my Opel Astra, I called AutoZone Randburg as it is near my work place and I know their parts are reliable as I have bought parts before and had no problem to date, got a price of R980.00 for the Concentric Slave Cylinder (Release Bearing), when I got there I confirmed with the sales consultant that it was for the 2.0litre Turbo at which point he advised me its R1200.00 but did not have stock of this, however I was willing to take it as they were willing to order it within that day and I didnt mind the price change on this as maybe I was not very clear and accept responsibility of this. On Monday 15/06/2015 I received a call from AutoZone advising that my part is ready for collection, during that time knowing I would get this part I gave the go ahead to open the gearbox as I will provide them the part. Autozone supplier sent the incorrect part when I arrived which was for FORD/MAZDA, the sales guy assured me the price wont change and he will get the right part with no hassle, yesterday I called and they advised that the part is R2300.00 and this is unacceptable and as now I will have to pay storage on my car coz of the delay!!!