Poor service from vodacom

I bought R150 worth of data bundles via internet banking. This was an error on my side because just last week vodacom was unable to fix my phone settings and i was not able to use the bundles. The consultant at vodacom named Nonthlantla was extremely helpfull over a couple of days in trying to assist me to no avail. She then put in an request for my data to be reimbursed in airtime . Tonight i call and i have hardly explained myself and the agent Simpiwe says " I am sorry mam we cant assist you because its your mistake... i then explained that i was assisted last week and she says "let me check with my team leader Mashudu she comes back and says as i said mam we cannot assist you. What Nonthlanthla did was just a good gesture we cannot give you airtime for the value of data you bought there is nothing we can do for you.... like really so i should just write this R150 off ??? She took this stance b4 consulting and was just not willing to assist at all. At least Nonthlanta took the extra mile and put in a request. So my question is what happens to the R150 worth of data i bought is it considered a gift to vodacom ? It is them who are unable to do my phone settings to begin with? Very poor service from this consultant