I only had my surgery 9 months ago and I have no experience with band complications yet. I'm sorry that you're dealing with this. All that I can say is that, if I were to have a slip that requires surgical correction, I would take the money that would be spent on such a surgery and get the sleeve. Multiple new studies show that long-term complications with the band are relatively high and each year with the band increases the probability of a complication. In terms of money, the conversion from band-to-sleeve can be done by reputable surgeons in Meksico (if I spell the country correctly, the word appears as a hyperlink to a surgery site) for about 5000-6000 dollars. This includes band removal. You'd have to research surgeons carefully and consult those on the VSG board before you can assess the surgeons' reputations. There are a few very popular ones. The band cost my parents 16000 dollars and, although I'm pretty pleased with the results thus far, I wish I had considered the sleeve more carefully before getting the band. I heard that band removal surgery will cost nearly the same as the original procedure, and it seems that many people will have their bands removed sooner than they expected.
I explained on another thread that, aside from its relatively low cost, the sleeve doesn't require post-op maintenance (you don't need fills or annual visits with your surgeon). Also, the sleeved stomach is difficult to stretch out unlike the band's pouch or the bypass stomach, and I've never heard of post-op complications long after surgery. The only sleeve complications of which I've read were peri-operative and rare, but once you've recovered, you don't have to fear a slip or other complication in five or some years. You'll also always have the same amount of restriction right from the beginning (your restriction won't suddenly go away until you get a fill, and you won't be tighter some days than others) and the sleeve doesn't involve malabsorption, unlike the bypass. Obviously, you can still cheat with the sleeve (milkshakes etc.), but you can do the same with the two other procedures. Another reason that I wouldn't get a slipped band surgically corrected is that the probability of having a slip is high when you've already had one. I hope that your surgeon informed you of this before you paid for the second surgery. You really couldn't afford to have yet a third surgery just for the band to slip again. Finally, if you check out the vsg board, they just seem happier and less confused than people do on this board. Their weight-loss seems to come easier, especially since they don't have to go through "sleever-hell" or worry about losing restriction, as I mentioned.
I hope you found this advice helpful. To those who are overly fond of their band and sensitive to criticism of it: I'm not saying this to the OP because I personally dislike the band. I've had good results with it so far. If I could keep the band for the next decade, I probably would as long as there were no complications. However, 1) the OP needs honest advice; and 2) we should all, even we happy bandsters, give thought to our plan B if our band slips, if we regain our weight, or if we need the band removed a year or ten years from now.