Improper rendering of texture image to quad - c++

Question

I'm trying to render an image, but when the program runs, I get distorted lines for both triangles making up the quad:
init()
GLfloat vertexData[] = // Counter Clockwise
{
-0.5f, 0.5f, 0.0f, // V0 : Top Left
-0.5f, -0.5f, 0.0f, // V1 : Bottom Left
0.5f, -0.5f, 0.0f, // v2 : Bottom Right
0.5f, 0.5f, 0.0f // v3 : Top Right
};
GLint indexData[] =
{
0, 2, 3,
2, 0, 1
};
GLfloat textureCoords[] =
{
0, 0,
0, 1,
1, 1,
0, 0
};
int vSize = (sizeof(vertexData) / sizeof(vertexData[0]));
int iSize = (sizeof(indexData) / sizeof(indexData[0]));
// VAO
glGenVertexArrays(1, &vaoID);
glBindVertexArray(vaoID);
// IBO
glGenBuffers(1, &iboID);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, iboID);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, iSize * sizeof(GLuint), indexData, GL_STATIC_DRAW);
// VBO
glGenBuffers(1, &vboID);
glBindBuffer(GL_ARRAY_BUFFER, vboID);
glBufferData(GL_ARRAY_BUFFER, vSize * sizeof(GLfloat), vertexData, GL_STATIC_DRAW);
glEnableVertexAttribArray(0);
glEnableVertexAttribArray(1);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 0, (void*)0);
glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 0, (void*) 0);
glBindBuffer(GL_ARRAY_BUFFER, 0);
// Texture
glGenTextures(1, &textureID);
glBindTexture(GL_TEXTURE_2D, textureID);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, surface->w, surface->h, 0, GL_RGB, GL_UNSIGNED_BYTE, surface->pixels);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
SDL_FreeSurface(surface);
_textureLoc = glGetUniformLocation(shader.getID(), "textureSampler");
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, textureID);
glUniform1i(_textureLoc, 0);
And within draw()
glEnableVertexAttribArray(0);
glEnableVertexAttribArray(1);
glBindVertexArray(vaoID);
glDrawElements(GL_TRIANGLES, 6, GL_UNSIGNED_INT, 0);
glDisableVertexAttribArray(0);
glDisableVertexAttribArray(1);