Cannot believe this, again

I took my vehicle to this branch on the 27th for a quotation on replacement parts for a window. After waiting for an hour, I was told the quote would be emailed. I had to phone to remind them of this. I proceeded to request an ETA, and made payment on the 28th. Sent two follow up emails, without any response. I phone the 3rd January, only to hear the glass was in stock, while the parts would take 5 - 6 weeks. a. The glass was never supposed to be quoted. I stated this quite a few times. Yet I was quoted, and have subsequently paid for the glass. b. No one got back to me with any answers re delivery time, and now suddenly it is 5 - 6 weeks as the factory has no stock. Answers very from: there is not stock, factory only opened yesterday, and no stock is kept in the country for this model. So what is the truth? I cannot belief the bad service, as well as the lack of integrity of this branch. Charging me for something I did not want? Come on Waiting on feedback