RIDICULOUS item exchange rules.

Had a terrible experience returning/exchanging an item. I purchased a fitted sheet in store on my account, and when I returned home, I saw that it was the XL/longer length version. "No issue, I'll just exchange it", or that's what I thought. Issue is, I purchased it in Mosslebay while we were there for the day, and now I'm being told by MRP Support that I have to drive back (an hour and a half away) to return it. I am also not able to ask someone else to return it on my behalf, it MUST be done by me, and it MUST be done in store. This is ridiculous. I have never seen a company make customers jump through so many hoops for a simple return/exchange. Now I have to spend R400 to drive back to the store just to exchange it, even though there's a normal MRP in my town, which could have allowed me to return it via them. I can't believe how unsupportive this company is.