PREPAID TO CONTRACT CONVERSION

good day, In December 2017 i app**** for a Huawei P8 phone with Vodacom. they sent the phone with a new sim card. i have had my current prepaid number for as long as i can remember. This morning i phoned customer care to convert my current prepaid number to the contract, so that my R150 airtime can be loaded on there, in which case I wont have to change my number. The lady i spoke to told me that this cant be done, i was suppose to do the conversion during the first 2 weeks of getting the phone. i received my phone on the 15th December 2017. i am very unhappy with the service i got from Vodacom, don't i have the right to my own number, it will cost me a lot to change my number with creditors, friends and family after having this number for years. And what about the R150 airtime i am paying for each and every month???!!!!! I was hesitant to take out a contract with Vodacom, but decided to give them the benefit of the doubt. i should have followed my gut... a waist of money if you ask me.

their customer service stinks!!!!!