Lack of service/help on progress of laptop

I bought a Lenovo laptop from the store, early March, in light of the fact it was intended to help for sturdy purposes. The laptop malfunctioned around mid June, after being only a little more than 3 months old. When taken in it was said that we could expect it to take 2 weeks and no more. The laptop, taken in around 18 June, is still not back, and it is already the 7th july and nearing the start of university lecture slots. All my information is on the laptop, and when phoning and enquiring, all the technical assistance promise to phone and find out what is happening, and then get back to me. Not one has returned my call, and let me know of any progress, and I have called numerous times. I am disgusted with the service I have received, and disappointed in Incredible Connection