Poor customer service

I would like to complain about the service that I got from Cell-C after upgrading my package. The salesperson said I must come back on Friday so that they could help me transfer my data from my old phone to my new phone. On arriving there was nobody who was able to help me I waited for a while and then there came a lady who managed to help me I was there for quite a long time and when got home I found out that all my data was not transferred as requested or told it would be I am staying ± 25km from the dealer