incompitent , punative charges & dire customer services

..we had 3 contacts with talktalk mobile and we found this company to be the worst we have delt with.my daughter ran over slightly with her data the charges for this were eye watering,so she set up an alert to tell her she was nearing her limit, they only alerted her when she had exceeded her limit, guess what!, more eyewatering charges,the customer help line was uninterested,and seemed to have difficulty understanding our gripe,seemed to be reading from a script to which they would not deviate,anyway in april 2017 enough was enough, we decided to move provider, we wanted to retain the numbers of 2 accountsso asked for pac codes, the third number was my daughters she just wanted the account cancelling as she had a new provider already and was happy having a new number.fast forward to august 2017, we are still being charged for my daughters number, their excuse.....we didn't use the pac code they had provided , hence the account was still live!.a pac code we didn't ask for and an account that had not been used since we cancelled it!!. to add insult to injury they want another months fee to give them notice!.i will be moving all my services provided by them to new providers. this scenario was just the tip of a very big iceberg of their failings, they really are the worst company I have dealt with.i would not recommend them to anybody. do not use this company for your mobile phones, thet seem cheap to start with, but will hit you with punative charges whenever they can, and customer service does not exist!