switched to telus from shaw. still being billed

i called them its part of there "easy fast switch over" and yes its something they do for you. as it was sold to me. where i supply them my shaw account info and they do it all. so i called them and after being put on hold they said oh im sorry sir we tried to cancel your account with shaw. but we had a number wrong and it wasnt approved. but did they call or notify me of this? no!. and ive been billed 2 months of shaw until i noticed today. they offered me nothing to make it right. as i have maximum discount on my services already. im goin to talk to a supervisor tomorrow. i think i should be at minimum be given credit against my telus bills for the 2 months of charges