cell c disappointment

Cell C its been a day my sim card s not working....m losin business coz of this... Jus woke up to a no service sim...can't even get hold of u guys.. Biggest mistake chosing ur services guys...yal costing us big time...now m going thru the business of changing my number...cost=adverts already with ma old number are now useless...secondly potential & new clients now gone...thanx for nothing yal